Citadel/UX USER command denial of service

citadel-user-dos (16840)

Medium Risk

Description:

Citadel/UX is vulnerable to a denial of service attack, caused by a buffer overflow. By connecting to port 504 and sending a USER command containing more than 97 bytes, a remote attacker could overflow a buffer and cause the server to crash.

*CVSS:

Base Score:	3.5
Access Vector:	Remote
Access Complexity:	Low
Authentication:	Not Required
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Partial
Temporal Score:	3
Exploitability:	Proof-Of-Concept
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Denial of Service

Remedy:

No remedy available as of September 4, 2010.

References:

• Citadel Web site: Download Citadel/UX.
• BID-10833: Citadel/UX Username Buffer Overflow Vulnerability
• CVE-2004-1705: Buffer overflow in Citadel/UX 6.23 and earlier allows remote attackers to cause a denial of service via a long username.
• SA12197: Citadel/UX "USER" Command Buffer Overflow Vulnerability
• SECTRACK ID: 1010809: Citadel/UX Buffer Overflow in USER Command Lets Remote Users Crash the Service

Platforms Affected:

• Citadel UX 5.90
• Citadel UX 5.91
• Citadel UX 6.07
• Citadel UX 6.08
• Citadel UX 6.14
• Citadel UX 6.23

Reported:

Jul 29, 2004

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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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