CVE-2023-36054
Published: 7 August 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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
krb5 Launchpad, Ubuntu, Debian |
bionic |
Released
(1.16-2ubuntu0.4+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| focal |
Released
(1.17-6ubuntu4.4)
|
|
| jammy |
Released
(1.19.2-2ubuntu0.3)
|
|
| lunar |
Released
(1.20.1-1ubuntu0.1)
|
|
| mantic |
Not vulnerable
(1.20.1-3ubuntu1)
|
|
| noble |
Not vulnerable
(1.20.1-3ubuntu1)
|
|
| trusty |
Released
(1.12+dfsg-2ubuntu5.4+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(1.20.1-3)
|
|
| xenial |
Released
(1.13.2+dfsg-5ubuntu2.2+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches: upstream: https://github.com/krb5/krb5/commit/ef08b09c9459551aabbe7924fb176f1583053cdd |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
References
- https://web.mit.edu/kerberos/www/advisories/
- https://github.com/krb5/krb5/compare/krb5-1.20.1-final...krb5-1.20.2-final
- https://github.com/krb5/krb5/compare/krb5-1.21-final...krb5-1.21.1-final
- https://ubuntu.com/security/notices/USN-6467-1
- https://ubuntu.com/security/notices/USN-6467-2
- https://www.cve.org/CVERecord?id=CVE-2023-36054
- NVD
- Launchpad
- Debian