{"id":"UBUNTU-CVE-2017-17458","details":"In Mercurial before 4.4.1, it is possible that a specially malformed repository can cause Git subrepositories to run arbitrary code in the form of a .git/hooks/post-update script checked into the repository. Typical use of Mercurial prevents construction of such repositories, but they can be created programmatically.","modified":"2025-09-08T16:44:32Z","published":"2017-12-07T18:29:00Z","upstream":["CVE-2017-17458"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-17458"},{"type":"REPORT","url":"https://bz.mercurial-scm.org/show_bug.cgi?id=5730"},{"type":"REPORT","url":"https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-November/107333.html"},{"type":"REPORT","url":"https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.4.1_.282017-11-07.29"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-17458"}],"affected":[{"package":{"name":"mercurial","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/mercurial@2.8.2-1ubuntu1.4?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.2-1ubuntu1.4"}]}],"versions":["2.6.3-1","2.7.2-1","2.8.1-2","2.8.2-1ubuntu1","2.8.2-1ubuntu1.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"mercurial","binary_version":"2.8.2-1ubuntu1.4"},{"binary_name":"mercurial-common","binary_version":"2.8.2-1ubuntu1.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-17458.json"}},{"package":{"name":"mercurial","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/mercurial@3.7.3-1ubuntu1.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.3-1ubuntu1.1"}]}],"versions":["3.4-1ubuntu2","3.6.2-1ubuntu2","3.7.3-1ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"mercurial","binary_version":"3.7.3-1ubuntu1.1"},{"binary_name":"mercurial-common","binary_version":"3.7.3-1ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-17458.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}