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Ubuntu Security Notice USN-4086-1

Ubuntu Security Notice USN-4086-1
Posted Aug 6, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4086-1 - It was discovered that Mercurial mishandled symlinks in subrepositories. An attacker could use this vulnerability to write arbitrary files to the target's filesystem.

tags | advisory, arbitrary
systems | linux, ubuntu
advisories | CVE-2019-3902
MD5 | 229dedb36ae397d0831e6fcd1828c176

Ubuntu Security Notice USN-4086-1

Change Mirror Download
==========================================================================
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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