Debian Security Advisory

DLA-1072-1 mercurial -- LTS security update

Date Reported:
31 Aug 2017
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 871709, Bug 871710.
In Mitre's CVE dictionary: CVE-2017-1000115, CVE-2017-1000116.
More information:

Two significant vulnerabilities were found in the Mercurial version control system which could lead to shell injection attacks and out-of-tree file overwrite.

  • CVE-2017-1000115

    Mercurial's symlink auditing was incomplete prior to 4.3, and could be abused to write to files outside the repository.

  • CVE-2017-1000116

    Mercurial was not sanitizing hostnames passed to ssh, allowing shell injection attacks on clients by specifying a hostname starting with -oProxyCommand. This vulnerability is similar to those in Git (CVE-2017-1000117) and Subversion (CVE-2017-9800).

For Debian 7 Wheezy, these problems have been fixed in version 2.2.2-4+deb7u5.

We recommend that you upgrade your mercurial packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: