PT-2023-7526 · Squid+10 · Squid+11
Joshua Rogers
·
Published
2023-11-24
·
Updated
2026-03-29
·
CVE-2023-49286
CVSS v3.1
8.6
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Squid versions prior to 6.5
Description
The issue is related to insufficient checking of exceptional states in the Squid proxy server, which can be exploited by a remote attacker to cause a denial of service. Squid is a caching proxy for the Web that supports HTTP, HTTPS, FTP, and more. The vulnerability is due to an incorrect check of the function return value, making Squid vulnerable to a denial of service attack against its helper process management.
Recommendations
For Squid versions prior to 6.5, users are advised to upgrade to version 6.5 to fix the bug. There are no known workarounds for this vulnerability. As a temporary workaround, consider disabling the helper process management until a patch is available. Restrict access to the vulnerable Squid proxy server to minimize the risk of exploitation.
Exploit
Fix
DoS
Assertion Failure
Improper Check for Exceptional Conditions
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Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Red Hat
Red Os
Rocky Linux
Squid
Squid Cache
Suse
Ubuntu