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Ubuntu 22.04 LTS: USN-5524-1 Critical: HarfBuzz Denial Of Service

ubuntu
Calendar Grey July 19, 2022
Dist Ubuntu Esm H88
An issue with HarfBuzz has been identified in Ubuntu 22.04 and 20.04, which may result in system instability and possible denial-of-service vulnerabilities.
HarfBuzz could be made to crash if it opened specially crafted data.

Summary

HarfBuzz could be made to crash if it opened specially crafted data.

Software Description:

- harfbuzz: OpenType text shaping engine

Details:

It was discovered that HarfBuzz incorrectly handled certain glyph sizes. A

remote attacker could use this issue to cause HarfBuzz to crash, resulting

in a denial of service.

Topics%20covered

Topics Covered

security advisory denial of service software update ubuntu harfbuzz

Update Instructions

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

Ubuntu 22.04 LTS:
  libharfbuzz0b                   2.7.4-1ubuntu3.1

Ubuntu 20.04 LTS:
  libharfbuzz0b                   2.6.4-1ubuntu4.2

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

References

https://ubuntu.com/security/notices/USN-5524-1

CVE-2022-33068

Severity
critical
Lowest
Low
Medium
High
Critical

July 19, 2022

Topics%20covered

Topics Covered

security advisory denial of service software update ubuntu harfbuzz

Package Information

https://launchpad.net/ubuntu/+source/harfbuzz/2.7.4-1ubuntu3.1
https://launchpad.net/ubuntu/+source/harfbuzz/2.6.4-1ubuntu4.2

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