Linux Terminal Server Project ldm.c weak security

ltsp-ldm-weak-security (42080)

Low Risk

Description:

Linux Terminal Server Project (LTSP) could provide weaker than expected security, caused by an error in ldm.c. By establishing an X session to an LTSP client, a remote attacker could exploit this vulnerability to view a victim's windows or keystrokes.

*CVSS:

Base Score:	5
Access Vector:	Network
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	None
Availability Impact:	None
Temporal Score:	3.7
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Other

Remedy:

Refer to DSA-1561-1 for patch, upgrade or suggested workaround information. See References.

References:

• Debian Bug report logs - #469462: X access wide open on LTSP clients.
• LTSP.org Web site: Linux Terminal Server Project.
• BID-28960: Linux Terminal Server Project 'ldm' Information Disclosure Vulnerability
• CVE-2008-1293: ldm in Linux Terminal Server Project (LTSP) 0.99 and 2 passes the -ac option to the X server on each LTSP client, which allows remote attackers to connect to this server via TCP port 6006 (aka display :6).
• DSA-1561: ldm -- programming error
• DSA-1561-1: ldm -- programming error
• SECTRACK ID: 1019940: Linux Terminal Server Project ldm Access Control Bug Lets Remote Users Access X Sessions
• USN-610-1: LTSP vulnerability

Platforms Affected:

• Canonical Ubuntu 6.06 LTS
• Canonical Ubuntu 7.04
• Canonical Ubuntu 7.10
• Debian Debian Linux 4.0
• LTSP Linux Terminal Server Project

Reported:

Apr 28, 2008

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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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