Fix: Potential Vulnerability in Cloned Function #3448
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The Windows Subsystem for Linux (WSL) is getting increasingly popular, in particular because it makes it _so_ easy to run Linux software on Windows' files, via the auto-mounted Windows drives (`C:\` is mapped to `/mnt/c/`, no need to set that up manually). Unfortunately, files/directories on the Windows drives can be accessed via their _short names_, if that feature is enabled (which it is on the `C:` drive by default). Which means that we have to safeguard even our Linux users against the short name attacks. Further, while the default options of CIFS/SMB-mounts seem to disallow accessing files on network shares via their short names on Linux/macOS, it _is_ possible to do so with the right options. So let's just safe-guard against short name attacks _everywhere_. Signed-off-by: Johannes Schindelin <[email protected]>
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Thanks for this - although it seems to mostly affect Windows users and the libgit2 in the tree isn't used on that platform in the build. Is this not something that can be remedied by switching to a more recent rugged release? |
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Description
This PR fixes a security vulnerability in checkout_verify_paths() that was cloned from libgit2 but did not receive the security patch. The original issue was reported and fixed under libgit2/libgit2@64c612c.
This PR applies the same patch to eliminate the vulnerability.
References
https://nvd.nist.gov/vuln/detail/CVE-2020-12279
libgit2/libgit2@64c612c