Squid Web Proxy Cache Authentication Header Parsing Remote Denial of Service Vulnerability

BID:36091

Info

Squid Web Proxy Cache Authentication Header Parsing Remote Denial of Service Vulnerability

Bugtraq ID: 36091
Class: Failure to Handle Exceptional Conditions
CVE: CVE-2009-2855
Remote: Yes
Local: No
Published: Aug 20 2009 12:00AM
Updated: Oct 26 2011 10:02PM
Credit: Matt Benjamin
Vulnerable: Ubuntu Ubuntu Linux 9.10 sparc
Ubuntu Ubuntu Linux 9.10 powerpc
Ubuntu Ubuntu Linux 9.10 lpia
Ubuntu Ubuntu Linux 9.10 i386
Ubuntu Ubuntu Linux 9.10 amd64
Ubuntu Ubuntu Linux 9.04 sparc
Ubuntu Ubuntu Linux 9.04 powerpc
Ubuntu Ubuntu Linux 9.04 lpia
Ubuntu Ubuntu Linux 9.04 i386
Ubuntu Ubuntu Linux 9.04 amd64
Ubuntu Ubuntu Linux 8.10 sparc
Ubuntu Ubuntu Linux 8.10 powerpc
Ubuntu Ubuntu Linux 8.10 lpia
Ubuntu Ubuntu Linux 8.10 i386
Ubuntu Ubuntu Linux 8.10 amd64
Ubuntu Ubuntu Linux 8.04 LTS sparc
Ubuntu Ubuntu Linux 8.04 LTS powerpc
Ubuntu Ubuntu Linux 8.04 LTS lpia
Ubuntu Ubuntu Linux 8.04 LTS i386
Ubuntu Ubuntu Linux 8.04 LTS amd64
Ubuntu Ubuntu Linux 6.06 LTS sparc
Ubuntu Ubuntu Linux 6.06 LTS powerpc
Ubuntu Ubuntu Linux 6.06 LTS i386
Ubuntu Ubuntu Linux 6.06 LTS amd64
Turbolinux Turbolinux Server 10.0
Turbolinux Turbolinux Server 11 x64
Turbolinux Turbolinux Server 11
Turbolinux Turbolinux Server 10.0.0 x64
Turbolinux Appliance Server 3.0 x64
Turbolinux Appliance Server 3.0
Turbolinux Appliance Server 2.0
SuSE SUSE Linux Enterprise Server 9
SuSE SUSE Linux Enterprise 11
SuSE SUSE Linux Enterprise 10 SP3
SuSE SUSE Linux Enterprise 10 SP2
Squid Web Proxy Cache 3.1 .5
Squid Web Proxy Cache 3.1 .4
Squid Web Proxy Cache 3.0 PRE3
Squid Web Proxy Cache 3.0 PRE2
Squid Web Proxy Cache 3.0 PRE1
Squid Web Proxy Cache 3.0
Squid Web Proxy Cache 3.1.0.12
Squid Web Proxy Cache 3.1.0.11
Squid Web Proxy Cache 3.1
Squid Web Proxy Cache 3.0.STABLE7
Squid Web Proxy Cache 3.0.STABLE6
Squid Web Proxy Cache 3.0.STABLE5
Squid Web Proxy Cache 3.0.STABLE4
Squid Web Proxy Cache 3.0.STABLE3
Squid Web Proxy Cache 3.0.STABLE2
Squid Web Proxy Cache 3.0.STABLE17
Squid Web Proxy Cache 3.0.STABLE16
Squid Web Proxy Cache 3.0.STABLE13
Squid Web Proxy Cache 3.0.STABLE12
Squid Web Proxy Cache 3.0.STABLE1
Squid Web Proxy Cache 2.7.STABLE6
Squid Web Proxy Cache 2.7.STABLE5
Squid Web Proxy Cache 2.7
Squid Web Proxy Cache 2.6.STABLE7
Squid Web Proxy Cache 2.6.STABLE6
Squid Web Proxy Cache 2.6.STABLE5
Squid Web Proxy Cache 2.6.STABLE4
Squid Web Proxy Cache 2.6.STABLE3
Squid Web Proxy Cache 2.6.STABLE2
Squid Web Proxy Cache 2.6.STABLE18
Squid Web Proxy Cache 2.6.STABLE17
Squid Web Proxy Cache 2.6.STABLE16
Squid Web Proxy Cache 2.6.STABLE15
Squid Web Proxy Cache 2.6.STABLE14
Squid Web Proxy Cache 2.6.STABLE13
Squid Web Proxy Cache 2.6.STABLE12
Squid Web Proxy Cache 2.6.STABLE1
Squid Web Proxy Cache 2.6
S.u.S.E. openSUSE 11.2
S.u.S.E. openSUSE 11.1
S.u.S.E. openSUSE 11.0
RedHat Enterprise Linux Desktop Workstation 5 client
Red Hat Enterprise Linux 5 Server
Mandriva Linux Mandrake 2008.0 x86_64
Mandriva Linux Mandrake 2008.0
MandrakeSoft Multi Network Firewall 2.0
MandrakeSoft Corporate Server 4.0 x86_64
MandrakeSoft Corporate Server 3.0 x86_64
MandrakeSoft Corporate Server 3.0
MandrakeSoft Corporate Server 4.0
Gentoo Linux
Debian Linux 5.0 sparc
Debian Linux 5.0 s/390
Debian Linux 5.0 powerpc
Debian Linux 5.0 mipsel
Debian Linux 5.0 mips
Debian Linux 5.0 m68k
Debian Linux 5.0 ia-64
Debian Linux 5.0 ia-32
Debian Linux 5.0 hppa
Debian Linux 5.0 armel
Debian Linux 5.0 arm
Debian Linux 5.0 amd64
Debian Linux 5.0 alpha
Debian Linux 5.0
Debian Linux 4.0 sparc
Debian Linux 4.0 s/390
Debian Linux 4.0 powerpc
Debian Linux 4.0 mipsel
Debian Linux 4.0 mips
Debian Linux 4.0 m68k
Debian Linux 4.0 ia-64
Debian Linux 4.0 ia-32
Debian Linux 4.0 hppa
Debian Linux 4.0 armel
Debian Linux 4.0 arm
Debian Linux 4.0 amd64
Debian Linux 4.0 alpha
Debian Linux 4.0
Not Vulnerable:

Discussion

Squid Web Proxy Cache Authentication Header Parsing Remote Denial of Service Vulnerability

Squid is prone to a remote denial-of-service vulnerability because the proxy server fails to properly parse certain external authentication headers that contain comma delimiters.

Successfully exploiting this issue allows remote attackers to trigger an infinite loop and consume system resources, denying further service to legitimate users.

Exploit / POC

Squid Web Proxy Cache Authentication Header Parsing Remote Denial of Service Vulnerability

An attacker may exploit this issue by using readily available networking tools.

Solution / Fix

Squid Web Proxy Cache Authentication Header Parsing Remote Denial of Service Vulnerability

Solution:
Updates are available. Please see the references for more information.


Debian Linux 5.0 ia-64

Debian Linux 5.0 alpha

Mandriva Linux Mandrake 2008.0 x86_64

Mandriva Linux Mandrake 2008.0

Debian Linux 5.0 mipsel

Debian Linux 4.0 amd64

Debian Linux 4.0 ia-32

Debian Linux 4.0 hppa

Turbolinux Turbolinux Server 10.0.0 x64

Debian Linux 4.0 armel

Debian Linux 5.0 armel

Debian Linux 5.0

Debian Linux 4.0 mipsel

Debian Linux 5.0 mips

Debian Linux 4.0 ia-64

Debian Linux 4.0 mips

Debian Linux 5.0 sparc

Debian Linux 4.0 arm

Debian Linux 4.0 powerpc

Debian Linux 4.0 m68k

Debian Linux 5.0 ia-32

Debian Linux 5.0 s/390

MandrakeSoft Multi Network Firewall 2.0

MandrakeSoft Corporate Server 3.0

MandrakeSoft Corporate Server 3.0 x86_64

References

Squid Web Proxy Cache Authentication Header Parsing Remote Denial of Service Vulnerability

References:

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