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Ubuntu 20.04 USN-6728-3 Critical: Squid Denial Of Service

ubuntu
Calendar Grey April 23, 2024
Dist Ubuntu Esm H88
The latest Squid security patch resolves a denial of service issue impacting Ubuntu 20.04 LTS. Apply the update to avoid system shutdowns.
Squid could be made to crash if it received specially crafted network traffic.

Summary

Squid could be made to crash if it received specially crafted network

traffic.

Software Description:

- squid: Web proxy cache server

Details:

USN-6728-1 fixed vulnerabilities in Squid. The fix for CVE-2023-5824 caused

Squid to crash in certain environments on Ubuntu 20.04 LTS and was disabled

in USN-6728-2. The problematic fix for CVE-2023-5824 has now been corrected

and reinstated in this update.

We apologize for the inconvenience.

Original advisory details:

Joshua Rogers discovered that Squid incorrectly handled collapsed

forwarding. A remote attacker could possibly use this issue to cause Squid

to crash, resulting in a denial of service. This issue only affected Ubuntu

20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-49288)

Joshua Rogers discovered that Squid incorrectly handled certain structural

elements. A remote attacker could possibly use this issue to cause Squid to

crash, resulting in a denial of service. (CVE-2023-5824)

Joshua Ro...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service squid ubuntu network issue

Update Instructions

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

Ubuntu 20.04 LTS:
   squid                           4.10-1ubuntu1.12

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6728-3

https://ubuntu.com/security/notices/USN-6728-1

CVE-2023-49288, CVE-2023-5824,

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6728-3

Topics%20covered

Topics Covered

security advisory denial of service squid ubuntu network issue

Package Information

https://launchpad.net/ubuntu/+source/squid/4.10-1ubuntu1.12

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