Homepage

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

Severity

 Recommended
0.0
critical
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.93% (83rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about OS Command Injection vulnerabilities in an interactive lesson.

Start learning
  • 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.