Bug 233253 - CVE-2007-1560 Squid TRACE DoS
CVE-2007-1560 Squid TRACE DoS
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: squid (Show other bugs)
5.0
All Linux
medium Severity medium
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Assigned To: Martin Nagy
public=20070320,reported=20070321,sou...
: Reopened, Security
Depends On:
Blocks:
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Reported: 2007-03-21 05:09 EDT by Mark J. Cox (Product Security)
Modified: 2016-07-26 19:46 EDT (History)
2 users (show)

See Also:
Fixed In Version: RHSA-2007-0131
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2007-12-13 06:58:33 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Mark J. Cox (Product Security) 2007-03-21 05:09:10 EDT
According to:
http://www.squid-cache.org/Advisories/SQUID-2007_1.txt

  "Due to an internal error Squid-2.6 is vulnerable to a denial
  of service attack when processing the TRACE request method."

See
    http://www.squid-cache.org/Versions/v2/2.6/changesets/11349.patch

This may only affect Squid 2.6 and therefore only RHEL5, will need confirmation
Comment 2 Josh Bressers 2007-03-21 11:22:27 EDT
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
wrong.
Comment 4 Josh Bressers 2007-03-22 14:16:48 EDT
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.
Comment 5 Martin Bacovsky 2007-03-23 14:19:40 EDT
This issue should be fixed in squid-2.6.STABLE6-4.el5. Package was built and
tested. Waiting for advisory.
Comment 9 Red Hat Bugzilla 2007-04-03 14:53:46 EDT
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.

http://rhn.redhat.com/errata/RHSA-2007-0131.html

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