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Vulnerability record · CVE-2010-1321 · published 19 May 2010

CVE-2010-1321: Mit kerberos 5 null pointer dereference vulnerability

Mit · Kerberos 5

The kg_accept_krb5 function in krb5/accept_sec_context.c in the GSS-API library in MIT Kerberos 5 (aka krb5) through 1.7.1 and 1.8 before 1.8.2, as used in kadmind and other applications, does not properly check for invalid GSS-API tokens, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an AP-REQ message in which the authenticator's checksum field is missing.

6.8 CVSS 2.0 Medium EPSS 6.9% · top 6.2% CWE-476 · NULL pointer dereference
6.8CVSS 2.0 base score
6.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
118References
16 Jun 2026Last modified by NVD

Description

The kg_accept_krb5 function in krb5/accept_sec_context.c in the GSS-API library in MIT Kerberos 5 (aka krb5) through 1.7.1 and 1.8 before 1.8.2, as used in kadmind and other applications, does not properly check for invalid GSS-API tokens, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an AP-REQ message in which the authenticator's checksum field is missing.

AV:N/AC:L/Au:S/C:N/I:N/A:C

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02257427 Broken Link
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041615.html Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041645.html Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041654.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00006.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00002.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00010.html Mailing ListThird Party Advisory
http://marc.info/?l=bugtraq&m=134254866602253&w=2 Issue TrackingThird Party Advisory
http://osvdb.org/64744 Broken Link
http://secunia.com/advisories/39762 Third Party Advisory
http://secunia.com/advisories/39784 Third Party Advisory
http://secunia.com/advisories/39799 Third Party Advisory
http://secunia.com/advisories/39818 Third Party Advisory
http://secunia.com/advisories/39849 Third Party Advisory
http://secunia.com/advisories/40346 Third Party Advisory
http://secunia.com/advisories/40685 Third Party Advisory
http://secunia.com/advisories/41967 Third Party Advisory
http://secunia.com/advisories/42432 Third Party Advisory
http://secunia.com/advisories/42974 Third Party Advisory
http://secunia.com/advisories/43335 Third Party Advisory
http://secunia.com/advisories/44954 Third Party Advisory
http://support.avaya.com/css/P8/documents/100114315 Third Party Advisory
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-005.txt PatchVendor Advisory
http://www.debian.org/security/2010/dsa-2052 Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2010:100 Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2011-194091.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujuly2011-313328.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpuoct2010-175626.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/javacpuoct2010-176258.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2010-0423.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2010-0770.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2010-0807.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2010-0873.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2010-0935.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2010-0987.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-0152.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-0880.html Third Party Advisory
http://www.securityfocus.com/archive/1/511331/100/0/threaded Third Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2010-1321), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.