USN-4436-2: librsvg regression

Releases

• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

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

• librsvg2-2 - 2.40.20-2ubuntu0.2

Ubuntu 16.04

• librsvg2-2 - 2.40.13-3ubuntu0.2

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

References

• https://launchpad.net/bugs/1889206