USN-4436-2: librsvg regression

29 July 2020

USN-4436-1 introduced a regression in librsvg.

Releases

Packages

  • 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
Ubuntu 16.04

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