Perforce P4Web Content-Length header denial of service

p4web-contentlength-dos (39142)

Medium Risk

Description:

Perforce P4Web is vulnerable to a denial of service attack, caused by improper handling of malformed HTTP Content-Length headers. By sending an HTTP request with no body and a Content-Length value greater than zero, a remote attacker could cause the P4Webs.exe process to consume all available CPU resources.

*CVSS:

Base Score:	7.8
Access Vector:	Network
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Complete
Temporal Score:	5.8
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Denial of Service

Remedy:

Upgrade to the latest version of P4Web (2007.2 or later), available from the Perforce Web site. See References.

References:

• BugTraq Mailing List, Tue Dec 18 2007 - 14:14:02 CST : SYMSA-2007-015.
• Perforce Web site: Perforce P4Web - 2007.2 Release Notes.
• Perforce Web site: Perforce Downloads.
• SYMSA-2007-015: Perforce P4Web Denial Of Service through resource starvation.
• BID-26806: Perforce P4Web Content-Length Header Remote Denial Of Service Vulnerability
• CVE-2007-6349: P4Webs.exe in Perforce P4Web 2006.2 and earlier, when running on Windows, allows remote attackers to cause a denial of service (CPU consumption) via an HTTP request with an empty body and a Content-Length greater than 0.
• SA28158: Perforce Web Client HTTP Request Processing Denial of Service

Platforms Affected:

• Perforce P4Web 2006.1
• Perforce P4Web 2006.2

Reported:

Dec 19, 2007

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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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