KDC in MIT Kerberos 5 (krb5kdc) does not set a global variable for some krb4 message types, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted messages that trigger a NULL pointer dereference or double-free.
Threat-Mapped Scoring
Score: 1.9
Priority: P3 - Important (Medium)
S9 – Sabotage of System/App
S10 – Denial of Service (+0.1 bonus)
EPSS
Score: 0.07232Percentile:
0.91181
CVSS Scoring
CVSS v3.1 Score: 9.8
Severity: CRITICAL
Mapped CWE(s)
CWE-665
: Improper Initialization
All CAPEC(s)
CAPEC-26 : Leveraging Race Conditions
CAPEC-29 : Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
CAPEC(s) with Mapped TTPs
Mapped ATT&CK TTPs
Affected Products
cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:6.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:7.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:7:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:8:*:*:*:*:*:*:*
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