Medium 4.3Published Mar 5, 2010

CVE-2010-0433The 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…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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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.

CVSS: 4.3 MEDIUM (v2.0, NVD)AV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness (CWE): CWE-20
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

openssl openssl openssl:openssl	through 0.9.8m; 0.9.8; 0.9.8a; 0.9.8b; 0.9.8c; 0.9.8d; 0.9.8e; 0.9.8f; and 6 more ranges	NVD

References

References

http://aix.software.ibm.com/aix/efixes/security/openssl_advisory.asc
http://cvs.openssl.org/chngview?cn=19374
http://groups.google.com/group/mailing.openssl.users/browse_thread/thread/c3e1ab0034ca4b4c/66aa896c3a78b2f7
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/038587.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.html
http://marc.info/?l=bugtraq&m=127128920008563&w=2
http://marc.info/?l=bugtraq&m=127557640302499&w=2
http://secunia.com/advisories/39461
http://secunia.com/advisories/39932
http://secunia.com/advisories/42724
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The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.