Pi3Web HTTP Server HTTP request denial of service

pi3web-http-dos (33967)

Medium Risk

Description:

Pi3Web HTTP Server is vulnerable to a denial of service when handling HTTP requests. By sending an overly long specially-crafted HTTP request composed of multiple "\A" characters, a remote attacker could exploit this vulnerability to cause a denial of service.

*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:	2.6
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Denial of Service

Remedy:

Upgrade to the latest version of Pi3Web (PL2 or later), available from the Pi3 Web page. See References.

References:

• Pi3 Web page: Welcome to Pi3.org.
• BID-23713: Pi3Web Overly Long HTTP Request Denial Of Service Vulnerability
• CVE-2007-2415: Pi3Web Web Server 2.0.3 PL1 allows remote attackers to cause a denial of service (application exit) via a long URI. NOTE: this issue was originally reported as a crash, but the vendor states that the impact is a clean exit in which the server I/O loop finishes and the process exits normally.
• OSVDB ID: 35466: Pi3Web Long URI Request Processing DoS
• SA25009: Pi3Web HTTP Request Processing Denial of Service Vulnerability
• VUPEN/ADV-2007-1579: Pi3Web Long HTTP Request Handling Remote Denial of Service Vulnerability

Platforms Affected:

• Holger Zimmermann and John Roy pi3Web 2.0.3 PL1

Reported:

Apr 30, 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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