Squid FTP Proxy Data Channel Vulnerabilities

BID:5158

Info

Squid FTP Proxy Data Channel Vulnerabilities

Bugtraq ID: 5158
Class: Design Error
CVE:
Remote: Yes
Local: No
Published: Jul 03 2002 12:00AM
Updated: Jul 03 2002 12:00AM
Credit: Discovery credited to Olaf Kirch.
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 FTP Proxy Data Channel Vulnerabilities

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

The Squid development team has reported that sanity checking for FTP data connections has been implemented in version 2.4.STABLE7. The checks are for FTP sessions proxied through Squid. They may prevent data injection/theft attacks or potentially evasion of firewall/proxy rules.

Exploit / POC

Squid FTP Proxy Data Channel Vulnerabilities

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 FTP Proxy Data Channel Vulnerabilities

Solution:
Sanity checks have been introduced into Squid as a default configuration option. The checks will prevent any attempt to carry out these attacks. If support for different control/data addresses is required, disabling the ftp_sanitycheck directive will remove the sanity checking.

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.

Updated packages 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 2.3.1

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 FTP Proxy Data Channel Vulnerabilities

References:

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