VULNERABILITY INTELLIGENCE
CVE-2010-0433
CVSS score4.3 MEDIUM
EPSS probability7.86%
CISA KEVNot currently listed
Published2010-03-05
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:N/I:N/A:P
Description
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.
Weakness classification
- CWE-20: Improper Input Validation