1. Ubuntu Security Notices
  2. USN-4086-1

USN-4086-1: Mercurial vulnerability

Publication date

6 August 2019

Overview

Mercurial could be made to overwrite files.

Releases

Packages

  • mercurial - easy-to-use, scalable distributed version control system

Details

It was discovered that Mercurial mishandled symlinks in subrepositories. An
attacker could use this vulnerability to write arbitrary files to the
target’s filesystem.

It was discovered that Mercurial mishandled symlinks in subrepositories. An
attacker could use this vulnerability to write arbitrary files to the
target’s filesystem.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
19.04 disco mercurial –  4.8.2-1ubuntu3.19.04.1
mercurial-common –  4.8.2-1ubuntu3.19.04.1

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References

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