зеркало из https://github.com/github/codeql.git
Merge pull request #16840 from yoff/stdlib-optparse
Python: Modelling of the Standard Library
This commit is contained in:
Sid Shankar
GitHub
Коммит
8864ea3e7d
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@ -46,8 +46,6 @@ private module Cached {
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or
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containerStep(nodeFrom, nodeTo)
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or
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copyStep(nodeFrom, nodeTo)
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or
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DataFlowPrivate::forReadStep(nodeFrom, _, nodeTo)
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or
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DataFlowPrivate::iterableUnpackingReadStep(nodeFrom, _, nodeTo)
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@ -191,18 +189,6 @@ predicate containerStep(DataFlow::Node nodeFrom, DataFlow::Node nodeTo) {
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DataFlowPrivate::comprehensionStoreStep(nodeFrom, _, nodeTo)
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}
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/**
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* Holds if taint can flow from `nodeFrom` to `nodeTo` with a step related to copying.
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*/
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predicate copyStep(DataFlow::CfgNode nodeFrom, DataFlow::CfgNode nodeTo) {
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exists(DataFlow::CallCfgNode call | call = nodeTo |
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call = API::moduleImport("copy").getMember(["copy", "deepcopy"]).getACall() and
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call.getArg(0) = nodeFrom
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)
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or
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nodeTo.(DataFlow::MethodCallNode).calls(nodeFrom, "copy")
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}
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/**
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* Holds if taint can flow from `nodeFrom` to `nodeTo` with an `await`-step,
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* such that the whole expression `await x` is tainted if `x` is tainted.
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@ -254,10 +254,14 @@ module Stdlib {
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* See https://docs.python.org/3.9/library/logging.html#logging.Logger.
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*/
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module Logger {
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private import semmle.python.dataflow.new.internal.DataFlowDispatch as DD
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/** Gets a reference to the `logging.Logger` class or any subclass. */
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API::Node subclassRef() {
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result = API::moduleImport("logging").getMember("Logger").getASubclass*()
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or
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result = API::moduleImport("logging").getMember("getLoggerClass").getReturn().getASubclass*()
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or
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result = ModelOutput::getATypeNode("logging.Logger~Subclass").getASubclass*()
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}
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@ -277,6 +281,13 @@ module Stdlib {
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ClassInstantiation() {
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this = subclassRef().getACall()
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or
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this =
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DD::selfTracker(subclassRef()
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.getAValueReachableFromSource()
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.asExpr()
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.(ClassExpr)
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.getInnerScope())
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or
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this = API::moduleImport("logging").getMember("root").asSource()
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or
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this = API::moduleImport("logging").getMember("getLogger").getACall()
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@ -1492,6 +1503,9 @@ module StdlibPrivate {
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or
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// io.open is a special case, since it is an alias for the builtin `open`
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result = API::moduleImport("io").getMember("open")
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or
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// similarly, coecs.open calls the builtin `open`: https://github.com/python/cpython/blob/3.12/Lib/codecs.py#L918
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result = API::moduleImport("codecs").getMember("open")
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}
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/**
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@ -7,12 +7,114 @@ extensions:
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- addsTo:
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pack: codeql/python-all
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extensible: sinkModel
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data: []
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data:
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- ["zipfile.ZipFile","Member[extractall].Argument[0,path:]", "path-injection"]
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- addsTo:
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pack: codeql/python-all
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extensible: summaryModel
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data:
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# See
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# - https://docs.python.org/3/glossary.html#term-mapping
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# - https://docs.python.org/3/library/stdtypes.html#dict.get
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- ["collections.abc.Mapping", "Member[get]", "Argument[1,default:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/argparse.html#argparse.ArgumentParser
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- ["argparse.ArgumentParser", "Member[_parse_known_args,_read_args_from_files]", "Argument[0,arg_strings:]", "ReturnValue", "taint"]
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- ["argparse.ArgumentParser", "Member[parse_args,parse_known_args]", "Argument[0,args:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/cgi.html#higher-level-interface
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- ["cgi.FieldStorage", "Member[getfirst,getlist,getvalue]", "Argument[self]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/contextlib.html#contextlib.ExitStack
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- ["contextlib.ExitStack", "Member[enter_context]", "Argument[0,cm:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/copy.html#copy.deepcopy
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- ["copy", "Member[copy,deepcopy]", "Argument[0,x:]", "ReturnValue", "value"]
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# See
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# - https://docs.python.org/3/library/ctypes.html#ctypes.create_string_buffer
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# - https://docs.python.org/3/library/ctypes.html#ctypes.create_unicode_buffer
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- ["ctypes", "Member[create_string_buffer,create_unicode_buffer]", "Argument[0,init:,init_or_size:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3.11/distutils/apiref.html#distutils.util.change_root
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- ["distutils", "Member[util].Member[change_root]", "Argument[0,new_root:,1,pathname:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/email.header.html#email.header.Header
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- ["email.header.Header!", "Subclass.Call", "Argument[0,s:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/email.utils.html#email.utils.parseaddr
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- ["email", "Member[utils].Member[parseaddr]", "Argument[0,addr:]", "ReturnValue", "taint"]
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- ["email", "Member[utils].Member[parseaddr]", "Argument[0,addr:]", "ReturnValue.TupleElement[0,1]", "taint"]
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# See See https://docs.python.org/3/library/fnmatch.html#fnmatch.filter
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- ["fnmatch", "Member[filter]", "Argument[0,names:].ListElement", "ReturnValue.ListElement", "value"]
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- ["fnmatch", "Member[filter]", "Argument[0,names:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/getopt.html#getopt.getopt
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- ["getopt", "Member[getopt]", "Argument[0,args:]", "ReturnValue.TupleElement[1]", "taint"]
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- ["getopt", "Member[getopt]", "Argument[1,shortopts:,2,longopts:]", "ReturnValue.TupleElement[0].ListElement.TupleElement[0]", "taint"]
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# See https://docs.python.org/3/library/gettext.html#gettext.gettext
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- ["gettext", "Member[gettext]", "Argument[0,message:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/gzip.html#gzip.GzipFile
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- ["gzip.GzipFile!", "Subclass.Call", "Argument[0,filename:]", "ReturnValue", "taint"]
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# See
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# - https://docs.python.org/3/library/html.html#html.escape
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# - https://docs.python.org/3/library/html.html#html.unescape
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- ["html", "Member[escape,unescape]", "Argument[0,s:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/html.parser.html#html.parser.HTMLParser.feed
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- ["html.parser.HTMLParser", "Member[feed]", "Argument[0,data:]", "Argument[self]", "taint"]
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# See https://docs.python.org/3.11/library/imp.html#imp.find_module
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- ["imp", "Member[find_module]", "Argument[0,name:,1,path:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/logging.html#logging.getLevelName
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# specifically the no matching case
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- ["logging", "Member[getLevelName]", "Argument[0,level:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/logging.html#logging.LogRecord.getMessage
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- ["logging.LogRecord", "Member[getMessage]", "Argument[self]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/mimetypes.html#mimetypes.guess_type
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- ["mimetypes", "Member[guess_type]", "Argument[0,url:]", "ReturnValue", "taint"]
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# See https://github.com/python/cpython/blob/main/Lib/nturl2path.py
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# No user-facing documentation, unfortunately.
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- ["nturl2path", "Member[pathname2url]", "Argument[0,p:]", "ReturnValue", "taint"]
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- ["nturl2path", "Member[url2pathname]", "Argument[0,url:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/optparse.html#optparse.OptionParser.parse_args
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- ["optparse.OptionParser", "Member[parse_args]", "Argument[0,args:,1,values:]", "ReturnValue.TupleElement[0,1]", "taint"]
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# See https://github.com/python/cpython/blob/3.10/Lib/pathlib.py#L972-L973
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- ["pathlib.Path", ".Member[__enter__]", "Argument[self]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/os.html#os.PathLike.__fspath__
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- ["pathlib.PurePath", "Member[__fspath__]", "Argument[self]", "ReturnValue", "taint"]
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# See
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# - https://docs.python.org/3/library/asyncio-queue.html#asyncio.Queue.get
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# - https://docs.python.org/3/library/asyncio-queue.html#asyncio.Queue.get_nowait
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- ["queue.Queue", "Member[get,get_nowait]", "Argument[self].ListElement", "ReturnValue", "value"]
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- ["queue.Queue", "Member[get,get_nowait]", "Argument[self]", "ReturnValue", "taint"]
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# See
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# - https://docs.python.org/3/library/asyncio-queue.html#asyncio.Queue.put
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# - https://docs.python.org/3/library/asyncio-queue.html#asyncio.Queue.put_nowait
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- ["queue.Queue", "Member[put,put_nowait]", "Argument[0,item:]", "Argument[self].ListElement", "value"]
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- ["queue.Queue", "Member[put,put_nowait]", "Argument[0,item:]", "Argument[self]", "taint"]
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# See
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# - https://docs.python.org/3/library/random.html#random.choice
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# - https://docs.python.org/3/library/random.html#module-random
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- ["random", "Member[choice]", "Argument[0,seq:].ListElement", "ReturnValue", "value"]
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- ["random", "Member[choice]", "Argument[0,seq:].SetElement", "ReturnValue", "value"]
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- ["random", "Member[choice]", "Argument[0,seq:]", "ReturnValue", "taint"]
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- ["random.Random", "Member[choice]", "Argument[0,seq:].ListElement", "ReturnValue", "value"]
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- ["random.Random", "Member[choice]", "Argument[0,seq:].SetElement", "ReturnValue", "value"]
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- ["random.Random", "Member[choice]", "Argument[0,seq:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/shlex.html#shlex.quote
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- ["shlex", "Member[quote]", "Argument[0,s:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/shutil.html#shutil.rmtree
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- ["shutil", "Member[rmtree]", "Argument[0,path:]", "Argument[2,onerror:,onexc:].Parameter[1]", "taint"]
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# See https://docs.python.org/3/library/shutil.html#shutil.which
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- ["shutil", "Member[which]", "Argument[0,cmd:,2,path:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/subprocess.html#subprocess.Popen
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- ["subprocess.Popen!", "Subclass.Call", "Argument[0,args:]", "ReturnValue", "taint"]
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# See
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# - https://docs.python.org/3/library/tarfile.html#tarfile.open
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# - https://docs.python.org/3/library/tarfile.html#tarfile.TarFile.open
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- ["tarfile", "Member[open]", "Argument[0,name:,2,fileobj:]", "ReturnValue", "taint"]
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- ["tarfile.TarFile", "Member[open]", "Argument[0,name:,2,fileobj:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/tempfile.html#tempfile.mkdtemp
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- ["tempfile", "Member[mkdtemp]", "Argument[0,suffix:,1,prefix:,2,dir:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/tempfile.html#tempfile.mkstemp
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- ["tempfile", "Member[mkstemp]", "Argument[0,suffix:,1,prefix:,2,dir:]", "ReturnValue.TupleElement[0,1]", "taint"]
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# See https://docs.python.org/3/library/textwrap.html#textwrap.dedent
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- ["textwrap", "Member[dedent]", "Argument[0,text:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/traceback.html#traceback.StackSummary.from_list
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- ["traceback.StackSummary", "Member[from_list]", "Argument[0,a_list:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/typing.html#typing.cast
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- ["typing", "Member[cast]", "Argument[1,val:]", "ReturnValue", "value"]
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# See https://docs.python.org/3/library/urllib.parse.html#urllib.parse.quote
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- ["urllib", "Member[parse].Member[quote]", "Argument[0,string:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/urllib.parse.html#urllib.parse.quote_plus
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@ -28,6 +130,21 @@ extensions:
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- ["urllib", "Member[parse].Member[urlencode]", "Argument[0,query:]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/urllib.parse.html#urllib.parse.urljoin
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- ["urllib", "Member[parse].Member[urljoin]", "Argument[0,base:,1,url:]", "ReturnValue", "taint"]
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# See the internal documentation
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# https://github.com/python/cpython/blob/3.12/Lib/zipfile/_path/__init__.py#L103-L105
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- ["zipfile.CompleteDirs", "Member[namelist]", "Argument[self]", "ReturnValue", "taint"]
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# See https://docs.python.org/3/library/zipfile.html#zipfile.ZipFile
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# it may be necessary to read the code to understand the taint propagation
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# Constructor: https://github.com/python/cpython/blob/3.12/Lib/zipfile/__init__.py#L1266
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- ["zipfile.ZipFile!", "Subclass.Call", "Argument[0,file:]", "ReturnValue", "taint"]
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- ["zipfile.ZipFile!", "Subclass.Call", "Argument[0,file:]", "ReturnValue.Attribute[filelist].ListElement.Attribute[filename]", "value"]
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# _extract_member: https://github.com/python/cpython/blob/3.12/Lib/zipfile/__init__.py#L1761
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- ["zipfile.ZipFile", "Member[_extract_member]", "Argument[1,targetpath:]", "ReturnValue", "taint"]
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# infolist: https://github.com/python/cpython/blob/3.12/Lib/zipfile/__init__.py#L1498-L1501
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- ["zipfile.ZipFile", "Member[infolist]", "Argument[self]", "ReturnValue", "taint"]
|
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- ["zipfile.ZipFile", "Member[infolist]", "Argument[self].Attribute[filelist]", "ReturnValue", "value"]
|
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# namelist: https://github.com/python/cpython/blob/3.12/Lib/zipfile/__init__.py#L1494-L1496
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- ["zipfile.ZipFile", "Member[namelist]", "Argument[self]", "ReturnValue", "taint"]
|
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- addsTo:
|
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pack: codeql/python-all
|
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extensible: neutralModel
|
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|
|
|
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|
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@ -45,6 +45,7 @@ module UnsafeShellCommandConstructionConfig implements DataFlow::ConfigSig {
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predicate isSink(DataFlow::Node sink) { sink instanceof Sink }
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predicate isBarrier(DataFlow::Node node) {
|
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node instanceof Sanitizer or
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node instanceof CommandInjection::Sanitizer // using all sanitizers from `py/command-injection`
|
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}
|
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|
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|
|
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|
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@ -8,7 +8,7 @@
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|
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private import python
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import semmle.python.dataflow.new.DataFlow
|
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private import semmle.python.dataflow.new.internal.TaintTrackingPrivate as TTP
|
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private import semmle.python.ApiGraphs
|
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|
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/**
|
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* Provides a data-flow configuration for detecting modifications of a parameters default value.
|
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|
|
@ -73,7 +73,13 @@ module ModificationOfParameterWithDefault {
|
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or
|
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// the target of a copy step is (presumably) a different object, and hence modifications of
|
||||
// this object no longer matter for the purposes of this query.
|
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TTP::copyStep(_, node) and state in [true, false]
|
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copyTarget(node) and state in [true, false]
|
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}
|
||||
|
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private predicate copyTarget(DataFlow::Node node) {
|
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node = API::moduleImport("copy").getMember(["copy", "deepcopy"]).getACall()
|
||||
or
|
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node.(DataFlow::MethodCallNode).calls(_, "copy")
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
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|
|
@ -75,6 +75,7 @@ edges
|
|||
| UnsafeUnpack.py:161:19:161:21 | ControlFlowNode for tar | UnsafeUnpack.py:163:33:163:35 | ControlFlowNode for tar | provenance | |
|
||||
| UnsafeUnpack.py:161:25:161:46 | ControlFlowNode for Attribute() | UnsafeUnpack.py:161:19:161:21 | ControlFlowNode for tar | provenance | |
|
||||
| UnsafeUnpack.py:161:38:161:45 | ControlFlowNode for savepath | UnsafeUnpack.py:161:25:161:46 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
| UnsafeUnpack.py:161:38:161:45 | ControlFlowNode for savepath | UnsafeUnpack.py:161:25:161:46 | ControlFlowNode for Attribute() | provenance | MaD:54 |
|
||||
| UnsafeUnpack.py:163:23:163:28 | ControlFlowNode for member | UnsafeUnpack.py:166:37:166:42 | ControlFlowNode for member | provenance | |
|
||||
| UnsafeUnpack.py:163:33:163:35 | ControlFlowNode for tar | UnsafeUnpack.py:163:23:163:28 | ControlFlowNode for member | provenance | |
|
||||
| UnsafeUnpack.py:166:23:166:28 | [post] ControlFlowNode for result | UnsafeUnpack.py:167:67:167:72 | ControlFlowNode for result | provenance | |
|
||||
|
|
|
|||
|
|
@ -1,13 +1,23 @@
|
|||
edges
|
||||
| test.py:10:16:10:24 | ControlFlowNode for file_path | test.py:11:21:11:29 | ControlFlowNode for file_path | provenance | |
|
||||
| test.py:11:5:11:35 | ControlFlowNode for Attribute() | test.py:11:5:11:52 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
| test.py:11:21:11:29 | ControlFlowNode for file_path | test.py:11:5:11:35 | ControlFlowNode for Attribute() | provenance | MaD:69 |
|
||||
| test.py:11:21:11:29 | ControlFlowNode for file_path | test.py:11:5:11:52 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
| test.py:11:21:11:29 | ControlFlowNode for file_path | test.py:12:21:12:29 | ControlFlowNode for file_path | provenance | |
|
||||
| test.py:12:5:12:35 | ControlFlowNode for Attribute() | test.py:12:5:12:48 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
| test.py:12:21:12:29 | ControlFlowNode for file_path | test.py:12:5:12:35 | ControlFlowNode for Attribute() | provenance | MaD:69 |
|
||||
| test.py:12:21:12:29 | ControlFlowNode for file_path | test.py:12:5:12:48 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
| test.py:12:21:12:29 | ControlFlowNode for file_path | test.py:14:26:14:34 | ControlFlowNode for file_path | provenance | |
|
||||
| test.py:14:10:14:35 | ControlFlowNode for Attribute() | test.py:15:14:15:29 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
| test.py:14:26:14:34 | ControlFlowNode for file_path | test.py:14:10:14:35 | ControlFlowNode for Attribute() | provenance | MaD:69 |
|
||||
| test.py:14:26:14:34 | ControlFlowNode for file_path | test.py:15:14:15:29 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
| test.py:14:26:14:34 | ControlFlowNode for file_path | test.py:18:26:18:34 | ControlFlowNode for file_path | provenance | |
|
||||
| test.py:18:10:18:35 | ControlFlowNode for Attribute() | test.py:19:14:19:39 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
| test.py:18:26:18:34 | ControlFlowNode for file_path | test.py:18:10:18:35 | ControlFlowNode for Attribute() | provenance | MaD:69 |
|
||||
| test.py:18:26:18:34 | ControlFlowNode for file_path | test.py:19:14:19:39 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
| test.py:18:26:18:34 | ControlFlowNode for file_path | test.py:22:21:22:29 | ControlFlowNode for file_path | provenance | |
|
||||
| test.py:22:5:22:30 | ControlFlowNode for Attribute() | test.py:22:5:22:60 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
| test.py:22:21:22:29 | ControlFlowNode for file_path | test.py:22:5:22:30 | ControlFlowNode for Attribute() | provenance | MaD:69 |
|
||||
| test.py:22:21:22:29 | ControlFlowNode for file_path | test.py:22:5:22:60 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
| test.py:22:21:22:29 | ControlFlowNode for file_path | test.py:24:18:24:26 | ControlFlowNode for file_path | provenance | |
|
||||
| test.py:24:18:24:26 | ControlFlowNode for file_path | test.py:24:5:24:52 | ControlFlowNode for Attribute() | provenance | Config |
|
||||
|
|
@ -37,14 +47,19 @@ edges
|
|||
| test.py:28:26:28:34 | ControlFlowNode for file_path | test.py:64:36:64:44 | ControlFlowNode for file_path | provenance | |
|
||||
nodes
|
||||
| test.py:10:16:10:24 | ControlFlowNode for file_path | semmle.label | ControlFlowNode for file_path |
|
||||
| test.py:11:5:11:35 | ControlFlowNode for Attribute() | semmle.label | ControlFlowNode for Attribute() |
|
||||
| test.py:11:5:11:52 | ControlFlowNode for Attribute() | semmle.label | ControlFlowNode for Attribute() |
|
||||
| test.py:11:21:11:29 | ControlFlowNode for file_path | semmle.label | ControlFlowNode for file_path |
|
||||
| test.py:12:5:12:35 | ControlFlowNode for Attribute() | semmle.label | ControlFlowNode for Attribute() |
|
||||
| test.py:12:5:12:48 | ControlFlowNode for Attribute() | semmle.label | ControlFlowNode for Attribute() |
|
||||
| test.py:12:21:12:29 | ControlFlowNode for file_path | semmle.label | ControlFlowNode for file_path |
|
||||
| test.py:14:10:14:35 | ControlFlowNode for Attribute() | semmle.label | ControlFlowNode for Attribute() |
|
||||
| test.py:14:26:14:34 | ControlFlowNode for file_path | semmle.label | ControlFlowNode for file_path |
|
||||
| test.py:15:14:15:29 | ControlFlowNode for Attribute() | semmle.label | ControlFlowNode for Attribute() |
|
||||
| test.py:18:10:18:35 | ControlFlowNode for Attribute() | semmle.label | ControlFlowNode for Attribute() |
|
||||
| test.py:18:26:18:34 | ControlFlowNode for file_path | semmle.label | ControlFlowNode for file_path |
|
||||
| test.py:19:14:19:39 | ControlFlowNode for Attribute() | semmle.label | ControlFlowNode for Attribute() |
|
||||
| test.py:22:5:22:30 | ControlFlowNode for Attribute() | semmle.label | ControlFlowNode for Attribute() |
|
||||
| test.py:22:5:22:60 | ControlFlowNode for Attribute() | semmle.label | ControlFlowNode for Attribute() |
|
||||
| test.py:22:21:22:29 | ControlFlowNode for file_path | semmle.label | ControlFlowNode for file_path |
|
||||
| test.py:24:5:24:52 | ControlFlowNode for Attribute() | semmle.label | ControlFlowNode for Attribute() |
|
||||
|
|
|
|||
|
|
@ -43,3 +43,12 @@ class MyLogger(logging.Logger):
|
|||
pass
|
||||
|
||||
MyLogger("bar").info("hello") # $ loggingInput="hello"
|
||||
|
||||
class CustomLogger(logging.getLoggerClass()):
|
||||
pass
|
||||
|
||||
CustomLogger("baz").info("hello") # $ loggingInput="hello"
|
||||
|
||||
class LoggerSubClassUsingSelf(logging.Logger):
|
||||
def foo(self):
|
||||
self.info("hello") # $ loggingInput="hello"
|
||||
Загрузка…
Ссылка в новой задаче