CVE-2013-6800
krb5: KDC remote DoS (NULL pointer dereference and daemon crash)
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Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · November 4, 2013
Updated · November 21, 2025
Description
It was found that if a KDC served multiple realms, certain requests could cause the setup_server_realm() function to dereference a NULL pointer. A remote, unauthenticated attacker could use this flaw to crash the KDC using a specially crafted request.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 4.3AV:N/AC:M/Au:N/C:N/I:N/A:P
CWE-476 · NULL Pointer Dereference