CVE-2010-0433: OpenSSL

Medium severity, CVSS 4.3. EPSS: 7.9% chance of exploitation in the next 30 days.

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.

Affected products

• OpenSSL OpenSSL: up to and including 0.9.8m; version 0.9.8 only; version 0.9.8a only; version 0.9.8b only; version 0.9.8c only; version 0.9.8d only; …

Published 2010-03-05. Last modified 2026-06-16.