Squid NTLM authentication denial of service
| squid-ntlm-authentication-dos (24282) |  Medium Risk |
Description:
Squid is vulnerable to a denial of service attack. If NTLM authentication is used, changes to the authentication scheme could cause the service to crash.
Consequences:
Denial of Service
Remedy:
Apply the 2.5.STABLE10 patch or later for this vulnerability, available from the Squid 2.5 Web page. See References.
For Red Hat Linux:
Refer to RHSA-2006:0052-7 or RHSA-2006:0045-8 for patch, upgrade, or suggested workaround information. See References.
For Ubuntu Linux:
Refer to USN-192-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- SGI Security Advisory 20060401-01-U: SGI Advanced Linux Environment 3 Security Update #56.
- Squid 2.5 Web page: Squid-2.5 Patches.
- ASA-2006-067: squid security update (RHSA-2006-0052)
- ASA-2006-072: squid security update (RHSA-2006-0045)
- BID-14977: Squid Proxy Client NTLM Authentication Denial Of Service Vulnerability
- CVE-2005-2917: Squid 2.5.STABLE10 and earlier, while performing NTLM authentication, does not properly handle certain request sequences, which allows attackers to cause a denial of service (daemon restart).
- DSA-828: squid -- authentication handling
- MDKSA-2005:181: Updated squid packages fix vulnerabilities
- RHSA-2006-0045: squid security update
- RHSA-2006-0052: squid security update
- SA16992: Squid NTLM Authentication Handling Denial of Service
- SECTRACK ID: 1014920: Squid Can Be Crashed By Remote Users With Specially Crafted Authentication Headers
- SUSE-SR:2005:025: SUSE Security Summary Report
- SUSE-SR:2005:027: SUSE Security Summary Report
Platforms Affected:
- Canonical Ubuntu 4.10
- Canonical Ubuntu 5.04
- Debian Debian Linux 3.1
- MandrakeSoft Mandrake Linux 10.1 X86_64
- MandrakeSoft Mandrake Linux 10.1
- MandrakeSoft Mandrake Linux 2006
- MandrakeSoft Mandrake Linux 2006 X86_64
- MandrakeSoft Mandrake Linux LE2005 X86_64
- MandrakeSoft Mandrake Linux LE2005
- MandrakeSoft Mandrake Linux Corporate Server 2.1
- MandrakeSoft Mandrake Linux Corporate Server 2.1 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 3.0
- MandrakeSoft Mandrake Multi Network Firewall 2.0
- RedHat Enterprise Linux 3 WS
- RedHat Enterprise Linux 3 ES
- RedHat Enterprise Linux 3 AS
- RedHat Enterprise Linux 3 Desktop
- RedHat Enterprise Linux 4 WS
- RedHat Enterprise Linux 4 ES
- RedHat Enterprise Linux 4 AS
- RedHat Enterprise Linux 4 Desktop
- SGI Advanced Linux Environment 3
- Squid-Cache Squid 2.5 STABLE6
- Squid-Cache Squid 2.5.STABLE1
- Squid-Cache Squid 2.5.STABLE10
- Squid-Cache Squid 2.5.STABLE2
- Squid-Cache Squid 2.5.STABLE3
- Squid-Cache Squid 2.5.STABLE4
- Squid-Cache Squid 2.5.STABLE5
- Squid-Cache Squid 2.5.STABLE7
- Squid-Cache Squid 2.5.STABLE8
- Squid-Cache Squid 2.5.STABLE9
- Turbolinux Turbolinux 10 Server
- Turbolinux Turbolinux 10 Server x64 Ed
- Turbolinux Turbolinux 7 Server
- Turbolinux Turbolinux 8 Server
- Turbolinux Turbolinux 8 Workstation
- Turbolinux Turbolinux Appliance Server 1.0 Hosting Ed
- Turbolinux Turbolinux Appliance Server 1.0 Workgroup Ed
Reported:
Sep 30, 2005
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
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