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CUPS Print Queue Security Bypass and Logfile Credentials Disclosure

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Release Date:  2004-10-06    Last Update:  2005-07-15    Views:  15,382

Secunia Advisory SA12736

Where:

From local network

Impact:

Security Bypass, Exposure of sensitive information

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Two vulnerabilities have been reported in CUPS, which can be exploited by malicious, local users to gain knowledge of sensitive information, or by malicious users to bypass certain security restrictions.

1) User credentials are stored in the "error_log" log file when printing to a shared printer via Samba. This discloses user names and passwords to local users.

2) CUPS scheduler uses case-sensitive string comparison on a queue name in "cupsd.conf" to determine how to authenticate a user. However, queue names are not case-sensitive. This can be exploited by unauthorized users to print to a password-protected queue by specifying the queue name using letters in a different case.


Solution:
Update to version 1.1.22rc1 or later.

Provided and/or discovered by:
1) Gary Smith
2) adji.df.uba

Original Advisory:
http://www.cups.org/str.php?L920
http://www.cups.org/str.php?L700

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: CUPS Print Queue Security Bypass and Logfile Credentials Disclosure

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