CVE-2023-36054

critical

Description

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.

References

Advisories
More

https://security.netapp.com/advisory/ntap-20230908-0004/

https://lists.debian.org/debian-lts-announce/2023/10/msg00031.html

https://web.mit.edu/kerberos/www/advisories/

https://github.com/krb5/krb5/compare/krb5-1.21-final...krb5-1.21.1-final

https://github.com/krb5/krb5/compare/krb5-1.20.1-final...krb5-1.20.2-final

https://github.com/krb5/krb5/commit/ef08b09c9459551aabbe7924fb176f1583053cdd

Details

Source: Mitre, NVD

Published: 2023-08-07

Updated: 2023-11-15

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

CVSS v4

Base Score: 9.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity: Critical

EPSS

EPSS: 0.02406