зеркало из https://github.com/github/codeql.git
39 строки
3.7 KiB
Markdown
39 строки
3.7 KiB
Markdown
# Improvements to C# analysis
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## Changes to existing queries
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| **Query** | **Expected impact** | **Change** |
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|------------------------------|------------------------|-----------------------------------|
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| Clear text storage of sensitive information (`cs/cleartext-storage-of-sensitive-information`) | More results | Now includes data sources for user controls in `System.Windows.Forms`. |
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| Dereferenced variable is always null (`cs/dereferenced-value-is-always-null`) | Improved results | The query has been rewritten from scratch, and the analysis is now based on static single assignment (SSA) forms. Results are now shown by default in LGTM. |
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| Dereferenced variable may be null (`cs/dereferenced-value-may-be-null`) | Improved results | The query has been rewritten from scratch, and the analysis is now based on static single assignment (SSA) forms. Results are now shown by default in LGTM. |
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| Double-checked lock is not thread-safe (`cs/unsafe-double-checked-lock`) | Fewer false positive and more true positive results | No longer highlights code where the underlying field was not updated in the `lock` statement, or where the field is a `struct`. Results have been added where there are other statements inside the `lock` statement. |
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| Exposure of private information (`cs/exposure-of-sensitive-information`) | More results | Now includes data sources for user controls in `System.Windows.Forms`. |
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| Improper control of generation of code (`cs/code-injection`) | More results | Now includes data sources for user controls in `System.Windows.Forms`. |
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| Off-by-one comparison against container length (`cs/index-out-of-bounds`) | Fewer false positive results | No longer reports results when there are additional guards on the index. |
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| SQL query built from user-controlled sources (`cs/sql-injection`) | More results | Now includes data sources for user controls in `System.Windows.Forms`. |
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| Uncontrolled format string (`cs/uncontrolled-format-string`) | More results | Now includes data sources for user controls in `System.Windows.Forms`. |
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| Unused format argument (`cs/format-argument-unused`) | Fewer false positive results | No longer reports results where the format string is empty. This is often used as a default value and is not an interesting result. |
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| Use of default ToString() (`cs/call-to-object-tostring`) | Fewer false positive results | No longer reports results for `char` arrays passed to `StringBuilder.Append()`, which were incorrectly marked as using `ToString`. |
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| Use of default ToString() (`cs/call-to-object-tostring`) | Fewer results | No longer reports results when the object is an interface or an abstract class. |
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| Using a package with a known vulnerability (`cs/use-of-vulnerable-package`) | More results | This query detects packages vulnerable to CVE-2019-0657. |
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## Changes to code extraction
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* Fix extraction of `for` statements where the condition declares new variables using `is`.
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* Initializers of `stackalloc` arrays are now extracted.
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## Changes to QL libraries
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* The class `TrivialProperty` now includes library properties determined to be trivial using CIL analysis. This may increase the number of results for all queries that use data flow.
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* Taint-tracking steps have been added for the `Json.NET` package. This will improve results for queries that use taint tracking.
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* Support has been added for EntityFrameworkCore, including
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- Stored data flow sources
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- Sinks for SQL expressions
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- Data flow through fields that are mapped to the database
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* Support has been added for NHibernate-Core, including
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- Stored data flow sources
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- Sinks for SQL expressions
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- Data flow through fields that are mapped to the database
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