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The kssl_keytab_is_available function in ssl/kssl.c in OpenSSL before 0.9.8n when Kerberos is enabled but Kerberos configuration files cannot be opened does not check a certain return value which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via SSL cipher negotiation as demonstrated by a chroot installation of Dovecot or stunnel without Kerberos configuration files inside the chroot.

oval:org.mitre.oval:def:9856

The kssl_keytab_is_available function in ssl/kssl.c in OpenSSL before 0.9.8n when Kerberos is enabled but Kerberos configuration files cannot be opened does not check a certain return value which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via SSL cipher negotiation as demonstrated by a chroot installation of Dovecot or stunnel without Kerberos configuration files inside the chroot.

Family:
unix
Status:
ACCEPTED
Platform(s):
  • Red Hat Enterprise Linux 5
  • Oracle Linux 5
  • CentOS Linux 5
Class:
vulnerability
Reference(s):
  • CVE-2010-0433
Product(s):