REDHAT-BUG-2451574: Use After Free
Squid is a caching proxy for the Web. Prior to version 7.5, due to heap Use-After-Free, Squid is vulnerable to Denial of Service when handling ICP traffic. This problem allows a remote attacker to perform a reliable and repeatable Denial of Service attack against the Squid service using ICP protocol. This attack is limited to Squid deployments that explicitly enable ICP support (i.e. configure non-zero icpport). This problem cannot be mitigated by denying ICP queries using icpaccess rules. Version 7.5 contains a patch.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2451574?
The vulnerability REDHAT-BUG-2451574 is classified as a Denial of Service risk due to a heap Use-After-Free issue.
How do I fix REDHAT-BUG-2451574?
To fix REDHAT-BUG-2451574, you should upgrade your Squid installation to version 7.5 or later.
What software is affected by REDHAT-BUG-2451574?
The affected software for REDHAT-BUG-2451574 is Squid versions prior to 7.5.
What type of attack can REDHAT-BUG-2451574 lead to?
REDHAT-BUG-2451574 can lead to a reliable and repeatable Denial of Service attack against the Squid service.
What is the exploit method for REDHAT-BUG-2451574?
The exploit method for REDHAT-BUG-2451574 involves manipulating ICP traffic to trigger the vulnerability.