Harry Maclean 5a6da827d0 Ruby: Avoid FP in TaintedFormatString query
Kernel#printf supports two call signatures:

    printf(String, *args)
    printf(IO, String, *args)

We want to identify the String argument, which is the format string.
Previously we would return the 0th and 1st arguments, which gives some
FPs when the 1st arg is not a format string.

We now try to rule out the trivial case by checking if arg 0 has a
string value, and then assuming it is the format string. Otherwise we
fall back to returning both arguments.

This still has some false positive potential, but less than previously.
2022-03-21 12:51:47 +13:00
2022-03-17 14:03:58 +01:00
2018-09-23 16:24:31 -07:00
2021-11-16 16:41:23 +01:00
2022-02-22 17:40:07 +01:00
2020-04-07 12:03:26 +01:00
2022-01-07 08:49:37 +00:00

CodeQL

This open source repository contains the standard CodeQL libraries and queries that power GitHub Advanced Security and the other application security products that GitHub makes available to its customers worldwide. For the queries, libraries, and extractor that power Go analysis, visit the CodeQL for Go repository.

How do I learn CodeQL and run queries?

There is extensive documentation on getting started with writing CodeQL. You can use the CodeQL for Visual Studio Code extension or the interactive query console on LGTM.com (Semmle Legacy product) to try out your queries on any open source project that's currently being analyzed.

Contributing

We welcome contributions to our standard library and standard checks. Do you have an idea for a new check, or how to improve an existing query? Then please go ahead and open a pull request! Before you do, though, please take the time to read our contributing guidelines. You can also consult our style guides to learn how to format your code for consistency and clarity, how to write query metadata, and how to write query help documentation for your query.

License

The code in this repository is licensed under the MIT License by GitHub. The use of CodeQL on open source code is licensed under specific Terms & Conditions UNLESS you have a commercial license in place. If you'd like to use CodeQL with a commercial codebase, please contact us for further help.

Visual Studio Code integration

If you use Visual Studio Code to work in this repository, there are a few integration features to make development easier.

CodeQL for Visual Studio Code

You can install the CodeQL for Visual Studio Code extension to get syntax highlighting, IntelliSense, and code navigation for the QL language, as well as unit test support for testing CodeQL libraries and queries.

Tasks

The .vscode/tasks.json file defines custom tasks specific to working in this repository. To invoke one of these tasks, select the Terminal | Run Task... menu option, and then select the desired task from the dropdown. You can also invoke the Tasks: Run Task command from the command palette.

Description
CodeQL: the libraries and queries that power security researchers around the world, as well as code scanning in GitHub Advanced Security
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