CVE-2012-1015

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-08-06 · updated 2026-06-16
Weakness: CWE-20

Description

The kdc_handle_protected_negotiation function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x, 1.9.x before 1.9.5, and 1.10.x before 1.10.3 attempts to calculate a checksum before verifying that the key type is appropriate for a checksum, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized pointer free, heap memory corruption, and daemon crash) via a crafted AS-REQ request.

Affected products

MIT Kerberos 5: 1.8, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5 (+5)

References

http://lists.opensuse.org/opensuse-updates/2012-08/msg00016.html
http://rhn.redhat.com/errata/RHSA-2012-1131.html
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2012-001.txt
http://www.debian.org/security/2012/dsa-2518
http://www.mandriva.com/security/advisories?name=MDVSA-2012:120
http://lists.opensuse.org/opensuse-updates/2012-08/msg00016.html
http://rhn.redhat.com/errata/RHSA-2012-1131.html
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2012-001.txt
http://www.debian.org/security/2012/dsa-2518
http://www.mandriva.com/security/advisories?name=MDVSA-2012:120

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