Shibboleth SP, OpenSAML and XMLTooling URL buffer overflow

opensaml-xmltooling-url-bo (53471) The risk level is classified as HighHigh Risk

Description:

Shibboleth Service Provider software libraries, OpenSAML and XMLTooling are vulnerable to a buffer overflow, caused by improper bounds checking when encoding or decoding URLs. By persuading a victim to visit a specially-crafted Web site, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the affected application to crash.

*CVSS:

Base Score: 6.8
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 5
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

For Shibboleth Service Provider:
Upgrade to the latest version of Shibboleth (1.3.4 or later), available from the Internet2 Web site. See References.

For OpenSAML:
Upgrade to the latest version of OpenSAML (1.1.3 or later), available from the Internet2 Web site. See References.

For XMLTooling:
Upgrade to the latest version of XMLTooling (1.2.2 or later), available from the Internet2 Web site. See References.

References:

  • Internet2 Web site: Shibboleth System.
  • Internet2 Web site: XMLTooling-C.
  • Internet2 Web site: OpenSAML.
  • Shibboleth Service Provider Security Advisory [26 August 2009]: Shibboleth SP software improperly handles malformed URLs.
  • BID-36514: OpenSAML URI Handling Remote Buffer Overflow Vulnerability
  • CVE-2009-3476: Buffer overflow in OpenSAML before 1.1.3 as used in Internet2 Shibboleth Service Provider software 1.3.x before 1.3.4, and XMLTooling before 1.2.2 as used in Internet2 Shibboleth Service Provider software 2.x before 2.2.1, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a malformed encoded URL.
  • DSA-1895: xmltooling -- several vulnerabilities
  • DSA-1896: shibboleth-sp -- several vulnerabilities
  • OSVDB ID: 58391: OpenSAML Crafted URL Handling Overflow
  • SA36869: XMLTooling-C URL Handling Buffer Overflow Vulnerability
  • SA36870: OpenSAML URL Handling Buffer Overflow Vulnerability

Platforms Affected:

  • Internet2 OpenSAML 1.1.2
  • Internet2 Shibboleth Service Provider 1.3
  • Internet2 Shibboleth Service Provider 1.3.3
  • Internet2 Shibboleth Service Provider 2.0
  • Internet2 Shibboleth Service Provider 2.2
  • Internet2 XMLTooling 1.0

Reported:

Aug 26, 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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