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Ubuntu Security Notice USN-7469-1
April 28, 2025

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Apache Traffic Server could be made to crash if it received specially
crafted network traffic.

Software Description:
- trafficserver: fast, scalable and extensible HTTP/1.1 and HTTP/2.0 
caching proxy

Details:

It was discovered that Apache Traffic Server exhibited poor server
resource management in its HTTP/2 protocol. An attacker could possibly
use this issue to cause Apache Traffic Server to crash, resulting in
a denial of service.

Update instructions:

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

Ubuntu 22.04 LTS
  trafficserver                   9.1.1+ds-2ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  trafficserver-dev               9.1.1+ds-2ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  trafficserver                   8.0.5+ds-3ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  trafficserver-dev               8.0.5+ds-3ubuntu0.1~esm1
                                  Available with Ubuntu Pro

After a standard system update you need to restart Apache Traffic Server
to make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7469-1
  CVE-2023-44487