Squid MSNT Auth Helper Buffer Overflow Vulnerability

BID:5155

Info

Squid MSNT Auth Helper Buffer Overflow Vulnerability

Bugtraq ID: 5155
Class: Boundary Condition Error
CVE: CVE-2002-0713
Remote: Yes
Local: No
Published: Jul 03 2002 12:00AM
Updated: Jul 11 2009 02:56PM
Credit: This issue was publicized in a Squid Security Advisory.
Vulnerable: National Science Foundation Squid Web Proxy 2.4 STABLE6
+ MandrakeSoft Corporate Server 1.0.1
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 8.2
+ Mandriva Linux Mandrake 8.1 ia64
 + Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
+ Mandriva Linux Mandrake 7.1
+ Trustix Secure Linux 1.5
+ Trustix Secure Linux 1.2
+ Trustix Secure Linux 1.1
National Science Foundation Squid Web Proxy 2.4 STABLE4
- MandrakeSoft Corporate Server 1.0.1
- MandrakeSoft Single Network Firewall 7.2
- Mandriva Linux Mandrake 8.2
- Mandriva Linux Mandrake 8.1 ia64
 - Mandriva Linux Mandrake 8.1
- Mandriva Linux Mandrake 8.0 ppc
 - Mandriva Linux Mandrake 8.0
- Mandriva Linux Mandrake 7.2
- Mandriva Linux Mandrake 7.1
National Science Foundation Squid Web Proxy 2.4 STABLE3
National Science Foundation Squid Web Proxy 2.4 STABLE2-3
- Caldera OpenLinux Server 3.1.1
- Caldera OpenLinux Workstation 3.1.1
National Science Foundation Squid Web Proxy 2.4 STABLE2-2
+ Caldera OpenLinux Server 3.1.1
- Caldera OpenLinux Workstation 3.1.1
National Science Foundation Squid Web Proxy 2.4 STABLE2
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenServer 5.0.6
National Science Foundation Squid Web Proxy 2.4 STABLE1
+ HP Secure OS software for Linux 1.0
+ MandrakeSoft Corporate Server 1.0.1
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
+ Mandriva Linux Mandrake 7.1
+ Redhat Linux 7.2
- SuSE Linux 7.2
National Science Foundation Squid Web Proxy 2.4 PRE-STABLE2
National Science Foundation Squid Web Proxy 2.4 PRE-STABLE
National Science Foundation Squid Web Proxy 2.4 DEVEL4
National Science Foundation Squid Web Proxy 2.4 DEVEL2
National Science Foundation Squid Web Proxy 2.4
+ FreeBSD FreeBSD 5.0
+ FreeBSD FreeBSD 4.5
+ FreeBSD FreeBSD 4.4
+ Trustix Secure Linux 1.5
+ Trustix Secure Linux 1.2
+ Trustix Secure Linux 1.1
National Science Foundation Squid Web Proxy 2.3.1
National Science Foundation Squid Web Proxy 2.3 STABLE5
+ MandrakeSoft Corporate Server 1.0.1
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
+ Mandriva Linux Mandrake 7.1
+ Trustix Secure Linux 1.5
+ Trustix Secure Linux 1.2
+ Trustix Secure Linux 1.1
National Science Foundation Squid Web Proxy 2.3 STABLE4-11
+ Caldera OpenLinux Server 3.1
- Caldera OpenLinux Workstation 3.1
National Science Foundation Squid Web Proxy 2.3 STABLE4
- Caldera OpenLinux Server 3.1
- Immunix Immunix OS 7.0 beta
 - Immunix Immunix OS 7.0
- Immunix Immunix OS 6.2
- MandrakeSoft Corporate Server 1.0.1
- MandrakeSoft Single Network Firewall 7.2
- Mandriva Linux Mandrake 8.0
- Mandriva Linux Mandrake 7.2
- Mandriva Linux Mandrake 7.1
+ Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 alpha
 + Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 + Redhat Linux 6.2 sparc
 + Redhat Linux 6.2 i386
 + Redhat Linux 6.2 alpha
 - SuSE Linux 7.3
- SuSE Linux 7.2
- SuSE Linux 7.1 x86
 - SuSE Linux 7.1 sparc
 - SuSE Linux 7.1 ppc
 - SuSE Linux 7.1 alpha
 - SuSE Linux 7.0 sparc
 - SuSE Linux 7.0 ppc
 - SuSE Linux 7.0 alpha
 - SuSE Linux 7.0
- SuSE Linux 6.4 ppc
 - SuSE Linux 6.4 alpha
 - SuSE Linux 6.4
- Trustix Secure Linux 1.2
- Trustix Secure Linux 1.1
- Trustix Secure Linux 1.0 1
 National Science Foundation Squid Web Proxy 2.3 STABLE3
- MandrakeSoft Corporate Server 1.0.1
- MandrakeSoft Single Network Firewall 7.2
- Mandriva Linux Mandrake 8.0
- Mandriva Linux Mandrake 7.2
- Mandriva Linux Mandrake 7.1
- Redhat Linux 7.0
- Trustix Secure Linux 1.2
- Trustix Secure Linux 1.1
- Trustix Secure Linux 1.0 1
 National Science Foundation Squid Web Proxy 2.3 STABLE2
- MandrakeSoft Corporate Server 1.0.1
- MandrakeSoft Single Network Firewall 7.2
- Mandriva Linux Mandrake 8.0
- Mandriva Linux Mandrake 7.2
- Mandriva Linux Mandrake 7.1
- Trustix Secure Linux 1.2
- Trustix Secure Linux 1.1
- Trustix Secure Linux 1.0 1
 National Science Foundation Squid Web Proxy 2.3
+ Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 alpha
 + Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 + Redhat Linux 6.2 sparc
 + Redhat Linux 6.2 i386
 + Redhat Linux 6.2 alpha
 + SCO Open Server 5.0.6 a
 + SCO Open Server 5.0.6
+ SCO Open Server 5.0.5
+ SCO Open Server 5.0.4
+ SCO Open Server 5.0.3
+ SCO Open Server 5.0.2
+ SCO Open Server 5.0.1
+ SCO Open Server 5.0
+ SuSE Linux 7.3 sparc
 + SuSE Linux 7.3 ppc
 + SuSE Linux 7.3 i386
 + SuSE Linux 7.2 i386
 + SuSE Linux 7.1 x86
 + SuSE Linux 7.1 sparc
 + SuSE Linux 7.1 ppc
 + SuSE Linux 7.1 alpha
 + SuSE Linux 7.0 sparc
 + SuSE Linux 7.0 ppc
 + SuSE Linux 7.0 i386
 + SuSE Linux 7.0 alpha
 + SuSE Linux 6.4 ppc
 + SuSE Linux 6.4 i386
 + SuSE Linux 6.4 alpha
 National Science Foundation Squid Web Proxy 2.2 STABLE5
- SuSE Linux 7.1 x86
 - SuSE Linux 7.1 sparc
 - SuSE Linux 7.1 ppc
 - SuSE Linux 7.1 alpha
 - SuSE Linux 7.0 sparc
 - SuSE Linux 7.0 ppc
 - SuSE Linux 7.0 alpha
 - SuSE Linux 7.0
- SuSE Linux 6.4 ppc
 - SuSE Linux 6.4 alpha
 - SuSE Linux 6.3 alpha
 - SuSE Linux 6.3
National Science Foundation Squid Web Proxy 2.2
- Redhat Linux 6.0 sparc
 - Redhat Linux 6.0 alpha
 - Redhat Linux 6.0
- Redhat Linux 5.2 sparc
 - Redhat Linux 5.2 i386
 - Redhat Linux 5.2 alpha
 National Science Foundation Squid Web Proxy 2.1
National Science Foundation Squid Web Proxy 2.0
Not Vulnerable: National Science Foundation Squid Web Proxy 2.4 STABLE7

Discussion

Squid MSNT Auth Helper Buffer Overflow Vulnerability

A remotely exploitable buffer overflow condition has been reported in the Squid MSNT auth helper component. This condition occurs when msnt_auth is configured to use denyusers or allowusers access control files.

Successful exploitation of this issue may allow for arbitrary code execution as the Squid process. Additionally, this issue may be exploited to trigger a denial of service condition.

Exploit / POC

Squid MSNT Auth Helper Buffer Overflow Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

Squid MSNT Auth Helper Buffer Overflow Vulnerability

Solution:
SuSE updates are available. Reportedly, the vulnerable feature is not included in the default SuSE package.

For this vulnerability to be present, squid.conf contains the following entry:
authenticate_program /usr/local/squid/libexec/squid/msnt_auth

Additionally, allowusers and denyusers files must be used for access control.

The vendor has also made fixes available which address this issue, and users are advised to upgrade.

FreeBSD has released a Security Notice FreeBSD-SN-02:05. Users of FreeBSD systems are strongly urged to upgrade their ports tree to fix various reported issues. Further information can be found in the referenced Security Notice.

SCO has released advisory CSSA-2003-SCO.9 to address this issue.


National Science Foundation Squid Web Proxy 2.2

National Science Foundation Squid Web Proxy 2.2 STABLE5

National Science Foundation Squid Web Proxy 2.3 STABLE3

National Science Foundation Squid Web Proxy 2.3 STABLE4

National Science Foundation Squid Web Proxy 2.3

National Science Foundation Squid Web Proxy 2.3 STABLE5

National Science Foundation Squid Web Proxy 2.3 STABLE2

National Science Foundation Squid Web Proxy 2.3 STABLE4-11

National Science Foundation Squid Web Proxy 2.3.1

National Science Foundation Squid Web Proxy 2.4 STABLE2-3

National Science Foundation Squid Web Proxy 2.4 STABLE4

National Science Foundation Squid Web Proxy 2.4 STABLE6

National Science Foundation Squid Web Proxy 2.4 STABLE2

National Science Foundation Squid Web Proxy 2.4 PRE-STABLE

National Science Foundation Squid Web Proxy 2.4 STABLE2-2

National Science Foundation Squid Web Proxy 2.4 STABLE3

National Science Foundation Squid Web Proxy 2.4 DEVEL4

National Science Foundation Squid Web Proxy 2.4 DEVEL2

National Science Foundation Squid Web Proxy 2.4

National Science Foundation Squid Web Proxy 2.4 PRE-STABLE2

National Science Foundation Squid Web Proxy 2.4 STABLE1

References

Squid MSNT Auth Helper Buffer Overflow Vulnerability

References:

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