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AUSCERT External Security Bulletin Redistribution
ESB-2024.2500
USN-6728-3: Squid vulnerability
24 April 2024
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AusCERT Security Bulletin Summary
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Product: Squid
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2023-5824 CVE-2024-25617 CVE-2024-25111
CVE-2024-23638 CVE-2023-49288
Original Bulletin:
https://ubuntu.com/security/notices/USN-6728-3
Comment: CVSS (Max): 8.6 CVE-2024-25617 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
CVSS Source: Ubuntu, [Red Hat]
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
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USN-6728-3: Squid vulnerability
23 April 2024
Squid could be made to crash if it received specially crafted network traffic.
Releases
o Ubuntu 20.04 LTS
Packages
o 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 Rogers discovered that Squid incorrectly handled Cache Manager error
responses. A remote trusted client can possibly use this issue to cause
Squid to crash, resulting in a denial of service. ( CVE-2024-23638 )
Joshua Rogers discovered that Squid incorrectly handled the HTTP Chunked
decoder. A remote attacker could possibly use this issue to cause Squid to
stop responding, resulting in a denial of service. ( CVE-2024-25111 )
Joshua Rogers discovered that Squid incorrectly handled HTTP header
parsing. A remote trusted client can possibly use this issue to cause
Squid to crash, resulting in a denial of service. ( CVE-2024-25617 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 20.04
o squid - 4.10-1ubuntu1.12
In general, a standard system update will make all the necessary changes.
References
o CVE-2023-49288
o CVE-2023-5824
o https://launchpad.net/bugs/2060880
Related notices
o USN-6728-1 : squid-cgi, squid-openssl, squidclient, squid-common,
squid-purge, squid
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