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OS Command Injection Affecting mercurial package, versions <4.0-1+deb9u2

Severity

 Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
6.33% (94th percentile)

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  • Snyk IDSNYK-DEBIAN9-MERCURIAL-311070
  • published7 Dec 2017
  • disclosed7 Dec 2017
Report a new vulnerability Found a mistake?

Introduced: 7 Dec 2017

CVE-2017-17458  (opens in a new tab)
CWE-78  (opens in a new tab)

How to fix?

Upgrade Debian:9 mercurial to version 4.0-1+deb9u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mercurial package and not the mercurial package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

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.