{"id":"UBUNTU-CVE-2023-22490","details":"Git is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its local clone optimization even when using a non-local transport. Though Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, the `objects` directory itself may still be a symbolic link. These two may be combined to include arbitrary files based on known paths on the victim's filesystem within the malicious repository's working copy, allowing for data exfiltration in a similar manner as CVE-2022-39253. A fix has been prepared and will appear in v2.39.2 v2.38.4 v2.37.6 v2.36.5 v2.35.7 v2.34.7 v2.33.7 v2.32.6, v2.31.7 and v2.30.8. If upgrading is impractical, two short-term workarounds are available. Avoid cloning repositories from untrusted sources with `--recurse-submodules`. Instead, consider cloning repositories without recursively cloning their submodules, and instead run `git submodule update` at each layer. Before doing so, inspect each new `.gitmodules` file to ensure that it does not contain suspicious module URLs.","modified":"2026-01-30T00:33:55.768181Z","published":"2023-02-14T18:00:00Z","related":["USN-5871-1","USN-5871-2"],"upstream":["CVE-2023-22490"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-22490"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5871-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-22490"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5871-2"}],"affected":[{"package":{"name":"git","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/git@1:2.7.4-0ubuntu1.10+esm5?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.7.4-0ubuntu1.10+esm5"}]}],"versions":["1:2.5.0-1","1:2.6.2-1","1:2.6.3-1","1:2.6.4-1","1:2.7.0~rc3-1","1:2.7.0-1","1:2.7.3-0ubuntu1","1:2.7.4-0ubuntu1","1:2.7.4-0ubuntu1.1","1:2.7.4-0ubuntu1.2","1:2.7.4-0ubuntu1.3","1:2.7.4-0ubuntu1.4","1:2.7.4-0ubuntu1.5","1:2.7.4-0ubuntu1.6","1:2.7.4-0ubuntu1.7","1:2.7.4-0ubuntu1.8","1:2.7.4-0ubuntu1.9","1:2.7.4-0ubuntu1.10","1:2.7.4-0ubuntu1.10+esm1","1:2.7.4-0ubuntu1.10+esm3","1:2.7.4-0ubuntu1.10+esm4"],"ecosystem_specific":{"binaries":[{"binary_name":"git","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-all","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-arch","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-core","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-cvs","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-daemon-run","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-daemon-sysvinit","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-el","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-email","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-gui","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-man","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-mediawiki","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"git-svn","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"gitk","binary_version":"1:2.7.4-0ubuntu1.10+esm5"},{"binary_name":"gitweb","binary_version":"1:2.7.4-0ubuntu1.10+esm5"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-22490.json"}},{"package":{"name":"git","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/git@1:2.17.1-1ubuntu0.16?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.17.1-1ubuntu0.16"}]}],"versions":["1:2.14.1-1ubuntu4","1:2.15.1-1ubuntu2","1:2.17.0-1ubuntu1","1:2.17.1-1ubuntu0.1","1:2.17.1-1ubuntu0.3","1:2.17.1-1ubuntu0.4","1:2.17.1-1ubuntu0.5","1:2.17.1-1ubuntu0.6","1:2.17.1-1ubuntu0.7","1:2.17.1-1ubuntu0.8","1:2.17.1-1ubuntu0.9","1:2.17.1-1ubuntu0.10","1:2.17.1-1ubuntu0.11","1:2.17.1-1ubuntu0.12","1:2.17.1-1ubuntu0.13","1:2.17.1-1ubuntu0.14","1:2.17.1-1ubuntu0.15"],"ecosystem_specific":{"binaries":[{"binary_name":"git","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"git-all","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"git-cvs","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"git-daemon-run","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"git-daemon-sysvinit","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"git-el","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"git-email","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"git-gui","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"git-man","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"git-mediawiki","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"git-svn","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"gitk","binary_version":"1:2.17.1-1ubuntu0.16"},{"binary_name":"gitweb","binary_version":"1:2.17.1-1ubuntu0.16"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-22490.json"}},{"package":{"name":"git","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/git@1:2.25.1-1ubuntu3.10?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.25.1-1ubuntu3.10"}]}],"versions":["1:2.20.1-2ubuntu1","1:2.24.0-1ubuntu1","1:2.24.0-1ubuntu2","1:2.25.0-1ubuntu1","1:2.25.1-1ubuntu1","1:2.25.1-1ubuntu2","1:2.25.1-1ubuntu3","1:2.25.1-1ubuntu3.1","1:2.25.1-1ubuntu3.2","1:2.25.1-1ubuntu3.3","1:2.25.1-1ubuntu3.4","1:2.25.1-1ubuntu3.5","1:2.25.1-1ubuntu3.6","1:2.25.1-1ubuntu3.7","1:2.25.1-1ubuntu3.8"],"ecosystem_specific":{"binaries":[{"binary_name":"git","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"git-all","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"git-cvs","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"git-daemon-run","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"git-daemon-sysvinit","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"git-el","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"git-email","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"git-gui","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"git-man","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"git-mediawiki","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"git-svn","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"gitk","binary_version":"1:2.25.1-1ubuntu3.10"},{"binary_name":"gitweb","binary_version":"1:2.25.1-1ubuntu3.10"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-22490.json"}},{"package":{"name":"git","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/git@1:2.34.1-1ubuntu1.8?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.34.1-1ubuntu1.8"}]}],"versions":["1:2.32.0-1ubuntu1","1:2.33.1-1ubuntu1","1:2.34.1-1ubuntu1","1:2.34.1-1ubuntu1.1","1:2.34.1-1ubuntu1.2","1:2.34.1-1ubuntu1.4","1:2.34.1-1ubuntu1.5","1:2.34.1-1ubuntu1.6"],"ecosystem_specific":{"binaries":[{"binary_name":"git","binary_version":"1:2.34.1-1ubuntu1.8"},{"binary_name":"git-all","binary_version":"1:2.34.1-1ubuntu1.8"},{"binary_name":"git-cvs","binary_version":"1:2.34.1-1ubuntu1.8"},{"binary_name":"git-daemon-run","binary_version":"1:2.34.1-1ubuntu1.8"},{"binary_name":"git-daemon-sysvinit","binary_version":"1:2.34.1-1ubuntu1.8"},{"binary_name":"git-email","binary_version":"1:2.34.1-1ubuntu1.8"},{"binary_name":"git-gui","binary_version":"1:2.34.1-1ubuntu1.8"},{"binary_name":"git-man","binary_version":"1:2.34.1-1ubuntu1.8"},{"binary_name":"git-mediawiki","binary_version":"1:2.34.1-1ubuntu1.8"},{"binary_name":"git-svn","binary_version":"1:2.34.1-1ubuntu1.8"},{"binary_name":"gitk","binary_version":"1:2.34.1-1ubuntu1.8"},{"binary_name":"gitweb","binary_version":"1:2.34.1-1ubuntu1.8"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-22490.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}