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Ubuntu 18.04, 16.04 LTS: USN-4436-2 Update on Librsvg Regression

ubuntu
Calendar Grey July 29, 2020
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-4436-3 highlights an important fix in libgtk across multiple versions, with significant information provided.
USN-4436-1 introduced a regression in librsvg.

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)

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu librsvg software regression

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

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

References

https://ubuntu.com/security/notices/USN-4436-2

https://ubuntu.com/security/notices/USN-4436-1

https://bugs.launchpad.net/ubuntu/xenial/+source/librsvg/+bug/1889206

Severity
critical
Lowest
Low
Medium
High
Critical

July 29, 2020

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu librsvg software regression

Package Information

https://launchpad.net/ubuntu/+source/librsvg/2.40.20-2ubuntu0.2
https://launchpad.net/ubuntu/+source/librsvg/2.40.13-3ubuntu0.2

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