GitHub Advisoryadvisory · Go

GHSA-57q7-rxqq-7vgp On Windows, `git-sizer` might run a `git` executable within the repository being analyzed

MEDIUM Published 2022-02-15 Modified 2021-05-18 Official page ↗
Ecosystem
Go
Packages
github.com/github/git-sizer
Severity
Moderate
Reviewed
2021-05-18

Affected packages

• Go github.com/github/git-sizer: < 1.4.0 → fixed in 1.4.0

Description

Impact On Windows, if `git-sizer` is run against a non-bare repository, and that repository has an executable called `git.exe`, `git.bat`, etc., then that executable might be run by `git-sizer` rather than the system `git` executable. An attacker could try to use social engineering to get a victim to run `git-sizer` against a hostile repository and thereby get the victim to run arbitrary code. On Linux or other Unix-derived platforms, a similar problem could occur if the user's `PATH` has the current directory before the path to the standard `git` executable, but this is would be a very unusual configuration that has been known for decades to lead to all kinds of security problems. Patches Users should update to git-sizer v1.4.0 Workarounds If you are on Windows, then either • Don't run `git-sizer` against a repository that might contain hostile code, or, if you must… • Run `git-sizer` against a bare clone of the hostile repository, or, if that is not possible… • Make sure that the hostile repository doesn't have an executable in its top-level directory before running `git-sizer`. If you are on Linux or other Unix-based system, then (for myriad reasons!) don't add the current directory to your `PATH`. References • Command PATH security in Go For more information If you have any questions or comments about this advisory: • Open an issue in the `git-sizer` project. • Email us at GitHub support.

References