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Home » Hacking News » SCO CSSA-2003-SCO.9: Squid mutiple vulnerabilities

SCO CSSA-2003-SCO.9: Squid mutiple vulnerabilities

by Nikola Strahija on May 27th, 2003 Several vulnerabilities have been found in Squid which may allow remote attackers to cause a denial of service attacks or to run arbitrary code.


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SCO Security Advisory

Subject: OpenServer 5.0.5 OpenServer 5.0.6 : Buffer overflows and other security vulnerabilities in Squid
Advisory number: CSSA-2003-SCO.9
Issue date: 2003 May 27
Cross reference:
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1. Problem Description

Vulnerability in Squid related to proxy authentication
credentials may allow remote web sites to obtain the user's
proxy login and password.

FTP proxy in Squid does not compare the IP addresses of
control and data connections with the FTP server, which
allows remote attackers to bypass firewall rules or spoof FTP
server responses.

Buffer overflows in Squid allow remote attackers to cause a
denial of service (crash) and possibly execute arbitrary code
(1) via the MSNT auth helper (msnt_auth) when using denyusers
or allowusers files, (2) via the gopher client, or (3) via
the FTP server directory listing parser when HTML output is
generated.


2. Vulnerable Supported Versions

System Binaries
----------------------------------------------------------------------
OpenServer 5.0.5 Squid distribution
OpenServer 5.0.6 Squid distribution


3. Solution

The proper solution is to install the latest packages.


4. OpenServer 5.0.5

4.1 Location of Fixed Binaries

ftp://ftp.sco.com/pub/updates/OpenServer/CSSA-2003-SCO.9


4.2 Verification

MD5 (VOL.000.000) = a4abc782d87415df7369a0483e3b1554
MD5 (VOL.000.001) = d91c192ac5ec45fe609d5a58fdf736b5
MD5 (VOL.000.002) = af55795c6ebbe9012c9eb5d8b2f6e57a
MD5 (VOL.000.003) = c5a74b7f6ab24a311b2fc24f01740ffe

md5 is available for download from
ftp://ftp.sco.com/pub/security/tools


4.3 Installing Fixed Binaries

Upgrade the affected binaries with the following sequence:

1) Download the VOL* files to the /tmp directory

2) Run the custom command, specify an install from media
images, and specify the /tmp directory as the location of
the images.


5. OpenServer 5.0.6

5.1 Location of Fixed Binaries

ftp://ftp.sco.com/pub/updates/OpenServer/CSSA-2003-SCO.9


5.2 Verification

MD5 (VOL.000.000) = a4abc782d87415df7369a0483e3b1554
MD5 (VOL.000.001) = d91c192ac5ec45fe609d5a58fdf736b5
MD5 (VOL.000.002) = af55795c6ebbe9012c9eb5d8b2f6e57a
MD5 (VOL.000.003) = c5a74b7f6ab24a311b2fc24f01740ffe

md5 is available for download from
ftp://ftp.sco.com/pub/security/tools


5.3 Installing Fixed Binaries

Upgrade the affected binaries with the following sequence:

1) Download the VOL* files to the /tmp directory

2) Run the custom command, specify an install from media
images, and specify the /tmp directory as the location of
the images.


6. References

Specific references for this advisory:

http://www.squid-cache.org/Advisories/SQUID-2002_3.txt
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0714
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0713
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0715

SCO security resources:

http://www.sco.com/support/security/index.html

This security fix closes SCO incidents sr866632, fz521515,
erg501628.


7. Disclaimer

SCO is not responsible for the misuse of any of the information
we provide on this website and/or through our security
advisories. Our advisories are a service to our customers
intended to promote secure installation and use of SCO
products.


8. Acknowledgements

The Squid Team discovered and researched these vulnerabilities.

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