CVE-2023-36054

moderate-risk
Published 2023-08-07

lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because _xdr_kadm5_principal_ent_rec does not validate the relationship between n_key_data and the key_data array count.

Do I need to act?

~
1.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (9)

Hci

Affected Vendors

Debian Mit Netapp

References (12)

Patch https://github.com/krb5/krb5/commit/ef08b09c9459551aabbe7924fb176f1583053cdd
Patch https://github.com/krb5/krb5/compare/krb5-1.20.1-final...krb5-1.20.2-final
Patch https://github.com/krb5/krb5/compare/krb5-1.21-final...krb5-1.21.1-final
Mailing List https://lists.debian.org/debian-lts-announce/2023/10/msg00031.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20230908-0004/
Product https://web.mit.edu/kerberos/www/advisories/
Patch https://github.com/krb5/krb5/commit/ef08b09c9459551aabbe7924fb176f1583053cdd
Patch https://github.com/krb5/krb5/compare/krb5-1.20.1-final...krb5-1.20.2-final
Patch https://github.com/krb5/krb5/compare/krb5-1.21-final...krb5-1.21.1-final
Mailing List https://lists.debian.org/debian-lts-announce/2023/10/msg00031.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20230908-0004/
Product https://web.mit.edu/kerberos/www/advisories/
42
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 3/34 · Minimal
Exposure 15/34 · Moderate