USN-5102-2: Mercurial vulnerabilities
16 March 2021
Mercurial could be made to overwrite files.
Releases
Packages
- mercurial - easy-to-use, scalable distributed version control system
Details
USN-5102-1 fixed vulnerabilities in Mercurial. This update provides the
corresponding updates for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory details:
It was discovered that Mercurial mishandled symlinks in subrepositories. An
attacker could use this issue to write arbitrary files to the
target’s filesystem. (CVE-2019-3902)
It was discovered that Mercurial incorrectly handled certain manifest files.
An attacker could use this issue to cause a denial of service and possibly
execute arbitrary code. This issue only affected Ubuntu 16.04 ESM. (CVE-2018-17983)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04
-
mercurial
-
3.7.3-1ubuntu1.2+esm2
Available with Ubuntu Pro
-
mercurial-common
-
3.7.3-1ubuntu1.2+esm2
Available with Ubuntu Pro
Ubuntu 14.04
-
mercurial
-
2.8.2-1ubuntu1.4+esm1
Available with Ubuntu Pro
-
mercurial-common
-
2.8.2-1ubuntu1.4+esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.