cve/2017/CVE-2017-17458.md

CVE-2017-17458

Description

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.

POC

Reference

• https://bz.mercurial-scm.org/show_bug.cgi?id=5730
• https://hackerone.com/reports/294147
• https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-November/107333.html

Github

No PoCs found on GitHub currently.