SLiM X authority information disclosure

slim-xauthority-info-disclosure (50611)

Low Risk

Description:

SLiM could allow a local attacker to obtain sensitive information, caused by the generation of the X authority file when the X authority cookie is passed using the command line to xauth. By accessing the process list, a local attacker could exploit this vulnerability to obtain the X authority cookie and gain unauthorized access to the system.

*CVSS:

Base Score:	2.1
Access Vector:	Local
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	None
Availability Impact:	None
Temporal Score:	1.7
Exploitability:	Unproven
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Obtain Information

Remedy:

No remedy available as of May 1, 2013.

References:

• Debian Bug report logs - #529306: slim: insecure xauth secret.
• Slim Web site: SLiM.
• BID-35015: SLiM Insecure X Authority File Local Authentication Bypass Vulnerability
• CVE-2009-1756: SLiM Simple Login Manager 1.3.0 places the X authority magic cookie (mcookie) on the command line when invoking xauth from (1) app.cpp and (2) switchuser.cpp, which allows local users to access the X session by listing the process and its arguments.
• OSVDB ID: 54583: SLiM xauth X Authority Cookie Local Disclosure
• SA35132: SLiM X Authority File Insecure Creation Security Issue

Platforms Affected:

• SLiM SLiM 1.3

Reported:

May 18, 2009

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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