Rapid7 Vulnerability & Exploit Database

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

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

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



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`.


  • centos-upgrade-emacs-git
  • centos-upgrade-emacs-git-el
  • centos-upgrade-git
  • centos-upgrade-git-all
  • centos-upgrade-git-bzr
  • centos-upgrade-git-cvs
  • centos-upgrade-git-daemon
  • centos-upgrade-git-debuginfo
  • centos-upgrade-git-email
  • centos-upgrade-git-gnome-keyring
  • centos-upgrade-git-gui
  • centos-upgrade-git-hg
  • centos-upgrade-git-instaweb
  • centos-upgrade-git-p4
  • centos-upgrade-git-svn
  • centos-upgrade-gitk
  • centos-upgrade-gitweb
  • centos-upgrade-perl-git
  • centos-upgrade-perl-git-svn

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center