Two vulnerabilities have been identified in OpenSSL, which could be exploited by attackers to cause a denial of service.
The first issue is caused by a double-free error within the handling of server name extension data when the application has been compiled using the non-default TLS server name extensions, which could be exploited by remote attackers to crash an affected application via a specially crafted Client Hello packet.
The second vulnerability is caused by a NULL pointer dereference error when the Server Key exchange message is omitted from a TLS handshake, which could be exploited to crash a vulnerable client when connected to a malicious server with particular cipher suites.
Credits
Vulnerabilities reported by Ossi Herrala and Jukka Taimisto (CROSS project / Codenomicon).
ChangeLog
2008-05-28 : Initial release
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