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Kerberos GSS-API SPNEGO Null Pointer Dereference and Invalid Memory Access Bugs Let Remote Denial of Service

oval:org.mitre.oval:def:6449

The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3 when SPNEGO is used allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via invalid ContextFlags data in the reqFlags field in a negTokenInit token.

Family:
unix
Status:
ACCEPTED
Platform(s):
  • VMWare ESX Server 4.0
  • VMWare ESX Server 3
  • VMWare ESX Server 3.5
Class:
vulnerability
Reference(s):
  • CVE-2009-0845
Product(s):