Squid Proxy FTP URI Remote Denial of Service Vulnerability

BID:22079

Info

Squid Proxy FTP URI Remote Denial of Service Vulnerability

Bugtraq ID: 22079
Class: Failure to Handle Exceptional Conditions
CVE: CVE-2007-0247
Remote: Yes
Local: No
Published: Jan 16 2007 12:00AM
Updated: Mar 19 2015 09:22AM
Credit: David Duncan Ross Palmer <[email protected]> reported this issue to the vendor.
Vulnerable: Ubuntu Ubuntu Linux 6.10 sparc
Ubuntu Ubuntu Linux 6.10 powerpc
Ubuntu Ubuntu Linux 6.10 i386
Ubuntu Ubuntu Linux 6.10 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 8.0
Turbolinux Turbolinux Server 10.0.0 x64
Turbolinux Appliance Server Workgroup Edition 1.0
Turbolinux Appliance Server Hosting Edition 1.0
Turbolinux Appliance Server 1.0 Workgroup Edition
Turbolinux Appliance Server 1.0 Hosting Edition
Turbolinux Appliance Server 2.0
Trustix Secure Linux 3.0
Trustix Secure Linux 2.2
Trustix Operating System Enterprise Server 2.0
SuSE SUSE Linux Enterprise Server 9
SuSE SUSE Linux Enterprise Server 10
SuSE SUSE Linux Enterprise Desktop 10
SuSE Linux 9.3
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.STABLE1
Squid Web Proxy Cache 2.5.STABLE14
Squid Web Proxy Cache 2.5.STABLE13
Squid Web Proxy Cache 2.5.STABLE12
Squid Web Proxy Cache 2.5.STABLE11
S.u.S.E. Linux 10.1
S.u.S.E. Linux 10.0
Red Hat Fedora Core5
Novell Open Enterprise Server (OES) 0
Novell Linux Desktop 9
Mandriva Linux Mandrake 2006.0 x86_64
Mandriva Linux Mandrake 2006.0
Mandriva Linux Mandrake 2007.0 x86_64
Mandriva Linux Mandrake 2007.0
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
Not Vulnerable: Squid Web Proxy Cache 2.6.STABLE7

Discussion

Squid Proxy FTP URI Remote Denial of Service Vulnerability

Squid is prone to a remote denial-of-service vulnerability because the proxy server fails to handle certain FTP requests.

Successfully exploiting this issue allows remote attackers to crash affected proxy applications, denying futher service to legitimate users.

Squid versions from 2.5.STABLE11 to 2.6.STABLE6 are vulnerable to this issue.

Exploit / POC

Squid Proxy FTP URI Remote Denial of Service Vulnerability

Attackers may exploit this issue using a web browser.

An example request URI sufficient to trigger this issue is available:

ftp://www.example.com/sample/directory;type=d

Solution / Fix

Squid Proxy FTP URI Remote Denial of Service Vulnerability

Solution:
The vendor has released Squid version 2.6.STABLE7 to address this issue. Please see the references for more information.


Squid Web Proxy Cache 2.6.STABLE4

Squid Web Proxy Cache 2.5.STABLE12

Squid Web Proxy Cache 2.6.STABLE3

Squid Web Proxy Cache 2.6.STABLE2

Squid Web Proxy Cache 2.6.STABLE6

Squid Web Proxy Cache 2.6.STABLE5

Squid Web Proxy Cache 2.5.STABLE11

Squid Web Proxy Cache 2.5.STABLE13

Squid Web Proxy Cache 2.6.STABLE1

Squid Web Proxy Cache 2.5.STABLE14

References

Squid Proxy FTP URI Remote Denial of Service Vulnerability

References:
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