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Vigil@nce - Shibboleth Service Provider: unreachable memory reading via SAML
March 2015 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An authenticated attacker can force a read at an invalid address
via SAML of Shibboleth Service Provider, in order to trigger a
denial of service.
Impacted products: Shibboleth Service Provider
Severity: 1/4
Creation date: 20/03/2015
DESCRIPTION OF THE VULNERABILITY
The Shibboleth Service Provider product processes SAML (Security
Assertion Markup Language) messages.
However, the analysis of a malformed SAML message tries to read a
memory area which is not reachable, which triggers a fatal error.
An authenticated attacker can therefore force a read at an invalid
address via SAML of Shibboleth Service Provider, in order to
trigger a denial of service.
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