vulnerability

Red Hat: CVE-2022-41903: CVE-2022-41903 git: Heap overflow in `git archive`, `git log --format` leading to RCE (Multiple Advisories)

Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
Jan 17, 2023
Added
Feb 8, 2023
Modified
Jan 28, 2025

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`.

Solution(s)

redhat-upgrade-emacs-gitredhat-upgrade-emacs-git-elredhat-upgrade-gitredhat-upgrade-git-allredhat-upgrade-git-bzrredhat-upgrade-git-coreredhat-upgrade-git-core-debuginforedhat-upgrade-git-core-docredhat-upgrade-git-credential-libsecretredhat-upgrade-git-credential-libsecret-debuginforedhat-upgrade-git-cvsredhat-upgrade-git-daemonredhat-upgrade-git-daemon-debuginforedhat-upgrade-git-debuginforedhat-upgrade-git-debugsourceredhat-upgrade-git-emailredhat-upgrade-git-gnome-keyringredhat-upgrade-git-guiredhat-upgrade-git-hgredhat-upgrade-git-instawebredhat-upgrade-git-p4redhat-upgrade-git-subtreeredhat-upgrade-git-svnredhat-upgrade-gitkredhat-upgrade-gitwebredhat-upgrade-perl-gitredhat-upgrade-perl-git-svn
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