"Due to an internal error Squid-2.6 is vulnerable to a denial
of service attack when processing the TRACE request method."
This may only affect Squid 2.6 and therefore only RHEL5, will need confirmation
I don't believe this is a security flaw. I can send a request to the squid
server. The child process does indeed die via an assertion error, but the
parent process start a new child to handle the new incoming requests. I've
mailed upstream and vendor-sec to see if I'm mistaken. I'll add a note if I'm
This is going to be considered a security flaw after all. As was pointed out by
upstream, since there is only one child process, it would be possible for an
attacker to send the same request in a loop which would prevent other users from
using the proxy.
Since the server can recover, and the attacker must be behind the proxy, we are
labeling this as moderate severity.
This issue should be fixed in squid-2.6.STABLE6-4.el5. Package was built and
tested. Waiting for advisory.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.