librsvg regression

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

* Ubuntu 18.04 LTS
* Ubuntu 16.04 LTS

Summary

USN-4436-1 introduced a regression in librsvg.

Software Description

* librsvg - renderer library for SVG files

Details

USN-4436-1 fixed a vulnerability in librsvg. The upstream fix
caused a regression when parsing certain SVG files. This update
backs out the fix pending further investigation.

Original advisory details:

It was discovered that librsvg incorrectly handled parsing certain
SVG files. A remote attacker could possibly use this issue to
cause librsvg to crash, resulting in a denial of service. This
issue only affected Ubuntu 16.04 LTS. (CVE-2017-11464)

It was discovered that librsvg incorrectly handled parsing certain
SVG files with nested patterns. A remote attacker could possibly
use this issue to cause librsvg to consume resources and crash,
resulting in a denial of service. (CVE-2019-20446)

Update instructions

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

Ubuntu 18.04 LTS
librsvg2-2 - 2.40.20-2ubuntu0.2

Ubuntu 16.04 LTS
librsvg2-2 - 2.40.13-3ubuntu0.2

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart your session to
make all the necessary changes.

References

* USN-4436-1
* LP: 1889206

--- Mystic BBS v1.12 A45 (Linux/64)
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