[USN-4086-1] Mercurial vulnerability

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[USN-4086-1] Mercurial vulnerability

Mike Salvatore
==========================================================================
Ubuntu Security Notice USN-4086-1
August 06, 2019

Mercurial vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04

Summary:

Mercurial could be made to overwrite files.

Software Description:
- 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.

Update instructions:

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

Ubuntu 19.04:
  mercurial                       4.8.2-1ubuntu3.19.04.1
  mercurial-common                4.8.2-1ubuntu3.19.04.1

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

References:
  https://usn.ubuntu.com/4086-1
  CVE-2019-3902

Package Information:
  https://launchpad.net/ubuntu/+source/mercurial/4.8.2-1ubuntu3.19.04.1


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