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Vulnerability Note VU#484726OpenSSL does not adequately validate length of Kerberos ticket during SSL/TLS handshakeOverviewOpenSSL contains a vulnerability in code that processes SSL/TLS handshakes when configured to use the Kerberos cipher suites. This vulnerability could allow a remote attacker to cause OpenSSL to crash.I. DescriptionOpenSSL implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols and includes a general purpose cryptographic library. SSL and TLS are commonly used to provide authentication, encryption, integrity, and non-repudiation services to network applications such as HTTP, IMAP, POP3, LDAP, and others.According to RFC2712, TLS allows clients and servers to negotiate cipher suites to meet specific security and administrative policies. In order to provide Kerberos-based authentication, TLS supports the Kerberos cipher suites. Upgrade to OpenSSL 0.9.7d. Alternatively, upgrade or apply a patch as specified by your vendor. Note that it is necessary to recompile any applications that are statically linked to OpenSSL libraries.
Referenceshttp://www.us-cert.gov/cas/techalerts/TA04-078A.html This vulnerability was discovered by the OpenSSL Project and reported by the National Infrastructure Security Co-ordination Centre (NISCC). This document was written by Damon Morda.
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