Squid Proxy Authentication Credential Forwarding Information Disclosure Vulnerability

BID:5154

Info

Squid Proxy Authentication Credential Forwarding Information Disclosure Vulnerability

Bugtraq ID: 5154
Class: Design Error
CVE: CVE-2002-0715
Remote: Yes
Local: No
Published: Jul 03 2002 12:00AM
Updated: Jul 11 2009 02:56PM
Credit: Vulnerabilities announced in a Squid Security Advisory. Discovery is credited to Hernan Otero.
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 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 Proxy Authentication Credential Forwarding Information Disclosure Vulnerability

Squid is a freely available, open source web proxy software package. It is designed for use on the Unix and Linux platforms. Squid includes support for proxy authentication.

A vulnerability exists in some versions of the Squid proxy. Under some configurations, the Authorization header may be forwarded to an additional server. This can result in cleartext usernames and passwords being disclosed to the remote server.

Reportedly, this condition may occur when the proxy is configured to require authentication for normal usage, but allows some sites to be visited freely.

Exploit / POC

Squid Proxy Authentication Credential Forwarding Information Disclosure Vulnerability

No exploit is required.

Solution / Fix

Squid Proxy Authentication Credential Forwarding Information Disclosure Vulnerability

Solution:
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.

Updates are available:


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 2.4 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 Proxy Authentication Credential Forwarding Information Disclosure Vulnerability

References:

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