Git is an open source, scalable, distributed revision control system. Versions prior to 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4 are subject to exposure of sensitive information to a malicious actor. When performing a local clone (where the source and target of the clone are on the same volume), Git copies the contents of the source's $GIT_DIR/objects
directory into the destination by either creating hardlinks to the source contents, or copying them (if hardlinks are disabled via --no-hardlinks
). A malicious actor could convince a victim to clone a repository with a symbolic link pointing at sensitive information on the victim's machine. This can be done either by having the victim clone a malicious repository on the same machine, or having them clone a malicious repository embedded as a bare repository via a submodule from any source, provided they clone with the --recurse-submodules
option. Git does not create symbolic links in the $GIT_DIR/objects
directory. The problem has been patched in the versions published on 2022-10-18, and backported to v2.30.x. Potential workarounds: Avoid cloning untrusted repositories using the --local
optimization when on a shared machine, either by passing the --no-local
option to git clone
or cloning from a URL that uses the file://
scheme. Alternatively, avoid cloning repositories from untrusted sources with --recurse-submodules
or run git config --global protocol.file.allow user
.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "git-core": "1:2.7.4-0ubuntu1.10+esm6", "git-daemon-run": "1:2.7.4-0ubuntu1.10+esm6", "git-email": "1:2.7.4-0ubuntu1.10+esm6", "git-mediawiki": "1:2.7.4-0ubuntu1.10+esm6", "git": "1:2.7.4-0ubuntu1.10+esm6", "git-el": "1:2.7.4-0ubuntu1.10+esm6", "git-cvs": "1:2.7.4-0ubuntu1.10+esm6", "git-doc": "1:2.7.4-0ubuntu1.10+esm6", "gitk": "1:2.7.4-0ubuntu1.10+esm6", "git-arch": "1:2.7.4-0ubuntu1.10+esm6", "git-daemon-sysvinit": "1:2.7.4-0ubuntu1.10+esm6", "git-svn": "1:2.7.4-0ubuntu1.10+esm6", "git-gui": "1:2.7.4-0ubuntu1.10+esm6", "git-man": "1:2.7.4-0ubuntu1.10+esm6", "gitweb": "1:2.7.4-0ubuntu1.10+esm6", "git-all": "1:2.7.4-0ubuntu1.10+esm6" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "git-daemon-run": "1:2.17.1-1ubuntu0.13", "git-email": "1:2.17.1-1ubuntu0.13", "git-mediawiki": "1:2.17.1-1ubuntu0.13", "git": "1:2.17.1-1ubuntu0.13", "git-el": "1:2.17.1-1ubuntu0.13", "git-cvs": "1:2.17.1-1ubuntu0.13", "git-doc": "1:2.17.1-1ubuntu0.13", "gitk": "1:2.17.1-1ubuntu0.13", "git-dbgsym": "1:2.17.1-1ubuntu0.13", "git-daemon-sysvinit": "1:2.17.1-1ubuntu0.13", "git-svn": "1:2.17.1-1ubuntu0.13", "git-gui": "1:2.17.1-1ubuntu0.13", "git-man": "1:2.17.1-1ubuntu0.13", "gitweb": "1:2.17.1-1ubuntu0.13", "git-all": "1:2.17.1-1ubuntu0.13" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "git-daemon-run": "1:2.25.1-1ubuntu3.6", "git-email": "1:2.25.1-1ubuntu3.6", "git-mediawiki": "1:2.25.1-1ubuntu3.6", "git": "1:2.25.1-1ubuntu3.6", "git-el": "1:2.25.1-1ubuntu3.6", "git-cvs": "1:2.25.1-1ubuntu3.6", "git-doc": "1:2.25.1-1ubuntu3.6", "gitk": "1:2.25.1-1ubuntu3.6", "git-dbgsym": "1:2.25.1-1ubuntu3.6", "git-daemon-sysvinit": "1:2.25.1-1ubuntu3.6", "git-svn": "1:2.25.1-1ubuntu3.6", "git-gui": "1:2.25.1-1ubuntu3.6", "git-man": "1:2.25.1-1ubuntu3.6", "gitweb": "1:2.25.1-1ubuntu3.6", "git-all": "1:2.25.1-1ubuntu3.6" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "git-daemon-run": "1:2.34.1-1ubuntu1.5", "git-email": "1:2.34.1-1ubuntu1.5", "git-mediawiki": "1:2.34.1-1ubuntu1.5", "git": "1:2.34.1-1ubuntu1.5", "gitk": "1:2.34.1-1ubuntu1.5", "git-cvs": "1:2.34.1-1ubuntu1.5", "git-doc": "1:2.34.1-1ubuntu1.5", "git-dbgsym": "1:2.34.1-1ubuntu1.5", "git-daemon-sysvinit": "1:2.34.1-1ubuntu1.5", "git-svn": "1:2.34.1-1ubuntu1.5", "git-gui": "1:2.34.1-1ubuntu1.5", "git-man": "1:2.34.1-1ubuntu1.5", "gitweb": "1:2.34.1-1ubuntu1.5", "git-all": "1:2.34.1-1ubuntu1.5" } ] }