Curl is a tool and libcurl is a library for transferring data with URL syntax, supporting FTP, FTPS, HTTP, HTTPS, GOPHER, TFTP, SCP, SFTP, TELNET, DICT, LDAP, LDAPS, FILE, IMAP, SMTP, POP3, RTSP and RTMP. libcurl offers a myriad of powerful features
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Patrick Monnerat 8ef147c436
ftp,imap,pop3,smtp: reject STARTTLS server response pipelining
If a server pipelines future responses within the STARTTLS response, the
former are preserved in the pingpong cache across TLS negotiation and
used as responses to the encrypted commands.

This fix detects pipelined STARTTLS responses and rejects them with an
error.

CVE-2021-22947

Bug: https://curl.se/docs/CVE-2021-22947.html
2021-09-13 16:51:31 +02:00
.circleci copyright: add boiler-plate headers to CI config files 2021-06-29 17:44:03 +02:00
.github codeql: fix error "Resource not accessible by integration" 2021-08-17 03:32:10 -04:00
.muse CI: Add muse CI config 2020-08-04 09:52:52 +02:00
CMake cmake: avoid poll() on macOS 2021-08-24 17:44:29 +02:00
docs RELEASE-PROCEDURE: add release dates from now to 8.0.0 in 2023 2021-09-13 16:32:41 +02:00
include mailing lists: move from cool.haxx.se to lists.haxx.se 2021-08-30 09:51:07 +02:00
lib ftp,imap,pop3,smtp: reject STARTTLS server response pipelining 2021-09-13 16:51:31 +02:00
m4 mailing lists: move from cool.haxx.se to lists.haxx.se 2021-08-30 09:51:07 +02:00
packages metalink: remove 2021-06-07 08:14:25 +02:00
plan9 copyright: fix year ranges 2020-11-05 08:22:10 +01:00
projects docs: Fix typos 2021-07-03 22:11:26 +02:00
scripts scripts: invoke interpreters through /usr/bin/env 2021-08-23 15:59:34 +02:00
src parse_args: redo the warnings for --remote-header-name combos 2021-09-10 17:02:21 +02:00
tests ftp,imap,pop3,smtp: reject STARTTLS server response pipelining 2021-09-13 16:51:31 +02:00
winbuild winbuild/README.md: clarify GEN_PDB option 2021-08-09 13:02:52 -04:00
zuul.d zuul: bump the rustls job to use v0.7.2 2021-09-13 16:45:48 +02:00
.azure-pipelines.yml runtests: add option -u to error on server unexpectedly alive 2021-09-09 21:28:26 +02:00
.cirrus.yml runtests: add option -u to error on server unexpectedly alive 2021-09-09 21:28:26 +02:00
.dcignore .dcignore: ignore tests and docs directories 2020-06-27 00:07:37 +02:00
.dir-locals.el curl.se: new home 2020-11-04 23:59:47 +01:00
.gitattributes gitattributes: Set batch files to CRLF line endings on checkout 2021-01-14 15:59:56 -05:00
.gitignore .gitignore: add directory containing the stats repo 2020-06-05 19:54:34 +02:00
.lgtm.yml metalink: remove 2021-06-07 08:14:25 +02:00
.mailmap mailmap: add Gleb Ivanovsky 2021-08-21 16:38:06 +02:00
CHANGES curl.se: new home 2020-11-04 23:59:47 +01:00
CMakeLists.txt cmake: sync CURL_DISABLE options 2021-08-25 13:05:50 +02:00
COPYING COPYING/configure: bump copyright year range 2021-01-01 00:52:28 +01:00
GIT-INFO GIT-INFO: suggest using autoreconf instead of buildconf 2021-05-08 10:55:34 +02:00
MacOSX-Framework copyrights: update copyright year ranges 2021-09-08 09:36:49 +02:00
Makefile.am Revert "libcurl.pc: make it relocatable" 2020-11-09 09:13:06 +01:00
Makefile.dist configure: provide --with-openssl, deprecate --with-ssl 2021-04-15 09:08:34 +02:00
README curl.se: new home 2020-11-04 23:59:47 +01:00
README.md CI: remove travis details 2021-06-29 17:42:57 +02:00
RELEASE-NOTES RELEASE-NOTES: synced 2021-09-08 08:54:29 +02:00
SECURITY.md SECURITY.md: minor rephrase 2020-03-30 08:53:25 +02:00
acinclude.m4 Get rid of the unused HAVE_SIG_ATOMIC_T et. al. 2021-07-23 12:40:42 -07:00
appveyor.yml runtests: add option -u to error on server unexpectedly alive 2021-09-09 21:28:26 +02:00
buildconf buildconf: exec autoreconf to avoid additional process 2020-08-29 21:43:49 +02:00
buildconf.bat curl.se: new home 2020-11-04 23:59:47 +01:00
configure.ac ngtcp2: fix build with ngtcp2 and nghttp3 2021-09-12 12:34:32 +02:00
curl-config.in curl.se: new home 2020-11-04 23:59:47 +01:00
libcurl.pc.in Revert "libcurl.pc: make it relocatable" 2020-11-09 09:13:06 +01:00
maketgz copyright: fix year ranges 2020-11-05 08:22:10 +01:00

README.md

curl logo

CII Best Practices Coverity passed AppVeyor Build Status Azure DevOps Build Status Cirrus Build Status Backers on Open Collective Sponsors on Open Collective Language Grade: C/C++ Codacy Badge Fuzzing Status

Curl is a command-line tool for transferring data specified with URL syntax. Find out how to use curl by reading the curl.1 man page or the MANUAL document. Find out how to install Curl by reading the INSTALL document.

libcurl is the library curl is using to do its job. It is readily available to be used by your software. Read the libcurl.3 man page to learn how!

You can find answers to the most frequent questions we get in the FAQ document.

Study the COPYING file for distribution terms.

Contact

If you have problems, questions, ideas or suggestions, please contact us by posting to a suitable mailing list.

All contributors to the project are listed in the THANKS document.

Commercial support

For commercial support, maybe private and dedicated help with your problems or applications using (lib)curl: https://curl.se/support.html

Website

Visit the curl website for the latest news and downloads.

Git

To download the very latest source from the Git server do this:

git clone https://github.com/curl/curl.git

(you'll get a directory named curl created, filled with the source code)

Security problems

Report suspected security problems via our HackerOne page and not in public!

Notice

Curl contains pieces of source code that is Copyright (c) 1998, 1999 Kungliga Tekniska Högskolan. This notice is included here to comply with the distribution terms.

Backers

Thank you to all our backers! 🙏 [Become a backer]

Sponsors

Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]