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CVE-2023-36054

Date: August 6, 2023

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.

Language: C

Severity Score

Related Resources (10)

https://security.netapp.com/advisory/ntap-20230908-0004/
https://lists.debian.org/debian-lts-announce/2023/10/msg00031.html
https://github.com/krb5/krb5/compare/krb5-1.20.1-final...krb5-1.20.2-final
https://github.com/krb5/krb5/commit/ef08b09c9459551aabbe7924fb176f1583053cdd
https://github.com/krb5/krb5/compare/krb5-1.21-final...krb5-1.21.1-final
https://web.mit.edu/kerberos/www/advisories/
https://security-tracker.debian.org/tracker/CVE-2023-36054
https://nvd.nist.gov/vuln/detail/CVE-2023-36054
https://security.alpinelinux.org/vuln/CVE-2023-36054
https://www.mend.io/vulnerability-database/CVE-2023-36054

Severity Score

Weakness Type (CWE)

Access of Uninitialized Pointer

CWE-824

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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