vulnerability

CentOS Linux: CVE-2022-41903: Important: git security update (CESA-2023:0978)

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`.

Solutions

centos-upgrade-emacs-gitcentos-upgrade-emacs-git-elcentos-upgrade-gitcentos-upgrade-git-allcentos-upgrade-git-bzrcentos-upgrade-git-cvscentos-upgrade-git-daemoncentos-upgrade-git-debuginfocentos-upgrade-git-emailcentos-upgrade-git-gnome-keyringcentos-upgrade-git-guicentos-upgrade-git-hgcentos-upgrade-git-instawebcentos-upgrade-git-p4centos-upgrade-git-svncentos-upgrade-gitkcentos-upgrade-gitwebcentos-upgrade-perl-gitcentos-upgrade-perl-git-svn
Title
NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.