Bug 6490 - [Anolis OS 7] Bugfix for CVE-2022-41903
Summary: [Anolis OS 7] Bugfix for CVE-2022-41903
Status: NEW
Alias: None
Product: Anolis OS 7
Classification: Anolis OS
Component: BaseOS Packages (show other bugs) BaseOS Packages
Version: 7.7
Hardware: All Linux
: P2-High S2-major
Target Milestone: ---
Assignee: 杨晓旋
QA Contact: 杨晓旋
URL:
Whiteboard:
Keywords: CVE
Depends on:
Blocks:
 
Reported: 2023-09-08 14:18 UTC by 小龙
Modified: 2023-09-08 14:18 UTC (History)
1 user (show)

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Description 小龙 admin 2023-09-08 14:18:01 UTC
Description:
Git is distributed revision control system. `git log` can display commits in an arbitrary format using its `--format` specifiers. This functionality is also exposed to `git archive` via the `export-subst` gitattribute. When processing the padding operators, there is a integer overflow in `pretty.c::format_and_pad_commit()` where a `size_t` is stored improperly as an `int`, and then added as an offset to a `memcpy()`. This overflow can be triggered directly by a user running a command which invokes the commit formatting machinery (e.g., `git log --format=...`). It may also be triggered indirectly through git archive via the export-subst mechanism, which expands format specifiers inside of files within the repository during a git archive. This integer overflow can result in arbitrary heap writes, which may result in arbitrary 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. Users who are unable to upgrade should disable `git archive` in untrusted repositories. If you expose git archive via `git daemon`, disable it by running `git config --global daemon.uploadArch false`.

Broken commit info:

Bugfix commit info:
https://github.com/git/git/commit/508386c6c5857b4faa2c3e491f422c98cc69ae76