REDHAT-BUG-2162055: Integer Overflow
First published: Wed Jan 18 2023(Updated: )
Git is distributed revision control system. gitattributes are a mechanism to allow defining attributes for paths. These attributes can be defined by adding a `.gitattributes` file to the repository, which contains a set of file patterns and the attributes that should be set for paths matching this pattern. When parsing gitattributes, multiple integer overflows can occur when there is a huge number of path patterns, a huge number of attributes for a single pattern, or when the declared attribute names are huge. These overflows can be triggered via a crafted `.gitattributes` file that may be part of the commit history. Git silently splits lines longer than 2KB when parsing gitattributes from a file, but not when parsing them from the index. Consequentially, the failure mode depends on whether the file exists in the working tree, the index or both. This integer overflow can result in arbitrary heap reads and writes, which may result in remote code execution. The problem has been patched in the versions published on 2023-01-17, going back to v2.30.7. Users are advised to upgrade. There are no known workarounds for this issue. <a href="https://github.com/git/git/security/advisories/GHSA-c738-c5qq-xg89">https://github.com/git/git/security/advisories/GHSA-c738-c5qq-xg89</a> <a href="https://github.com/git/git/commit/508386c6c5857b4faa2c3e491f422c98cc69ae76">https://github.com/git/git/commit/508386c6c5857b4faa2c3e491f422c98cc69ae76</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Git | >2.30.7 |
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Reference Links
- https://github.com/git/git/security/advisories/GHSA-c738-c5qq-xg89
- https://github.com/git/git/commit/508386c6c5857b4faa2c3e491f422c98cc69ae76
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2162065
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2162066
- https://access.redhat.com/security/cve/CVE-2022-41903
- https://access.redhat.com/errata/RHSA-2023:0597
- https://access.redhat.com/errata/RHSA-2023:0596
- https://access.redhat.com/errata/RHSA-2023:0599
- https://access.redhat.com/errata/RHSA-2023:0609
- https://access.redhat.com/errata/RHSA-2023:0611
- https://access.redhat.com/errata/RHSA-2023:0610
- https://access.redhat.com/errata/RHSA-2023:0627
- https://access.redhat.com/errata/RHSA-2023:0628
- https://access.redhat.com/security/cve/cve-2022-23521
- https://access.redhat.com/errata/RHSA-2023:0978
- https://access.redhat.com/errata/RHSA-2023:1677
- https://bugzilla.redhat.com/show_bug.cgi?id=2162055
Frequently Asked Questions
What is the severity of REDHAT-BUG-2162055?
The severity of REDHAT-BUG-2162055 is classified as moderate, indicating a potential security risk that should be addressed.
How do I fix REDHAT-BUG-2162055?
To fix REDHAT-BUG-2162055, update to a patched version of Git that resolves the issue.
What versions of Git are affected by REDHAT-BUG-2162055?
Git versions starting from 2.30.7 prior to the patched update are affected by REDHAT-BUG-2162055.
What specific issue does REDHAT-BUG-2162055 address?
REDHAT-BUG-2162055 addresses vulnerabilities in the way Git processes `.gitattributes` files leading to potential privilege escalation.
Is there a workaround for REDHAT-BUG-2162055 before applying a fix?
A suggested workaround for REDHAT-BUG-2162055 is to restrict access to the repository until an update can be applied.
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