Squid Can Be Crashed By Remote Users With Specially Crafted Authentication Headers
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SecurityTracker Alert ID: 1014920
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SecurityTracker URL: http://securitytracker.com/id?1014920
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CVE Reference: CVE-2005-2917
(Links to External Site)
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OSVDB Reference: 19607
(Links to External Site)
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Updated: Mar 7 2006
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Original Entry Date: Sep 16 2005
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Impact: Denial of service via network
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Fix Available: Yes
Vendor Confirmed: Yes
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Version(s): 2.5
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Description: A vulnerability was reported in Squid in the processing of authentication requests. A remote user can cause Squid to crash.
A remote user can supply an HTTP request with a specially crafted scheme in the authentication header to cause Squid to crash.
Mike Diggins reported this vulnerability.
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Impact: A remote user can cause the Squid process to crash.
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Solution: The vendor has issued a patch, available at:
http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE10-NTLM-scheme_assert.patch
A
patch is also available for 3.0.
The vendor's bug report is available at:
http://www.squid-cache.org/bugs/show_bug.cgi?id=1391
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Vendor URL: www.squid-cache.org/bugs/show_bug.cgi?id=1391 (Links to External Site)
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Cause: Exception handling error
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Underlying OS: Linux (Any), UNIX (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Fri, 16 Sep 2005 02:12:02 -0400
Subject: Squid vulnerability
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FATAL: Incorrect scheme in auth header
synopsis Squid may crash with the above error when given certain request sequences.
severity Major
date 2005-09-15 11:15
bugzilla #1391
versions Squid-2.5
platforms All
patch squid-2.5.STABLE10-NTLM-scheme_assert.patch
http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE10-NTLM-scheme_assert.patch
workaround Disable ntlm authentication
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