lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before…
Priority LOW 34CWE-824Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 2 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-824 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02814 86th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 2 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* | before 1.20.2 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.21:-:*:*:*:*:*:* | 1.21 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.21:beta1:*:*:*:*:*:* | 1.21 beta1 | Vulnerable | moos-ivp |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:clustered_data_ontap:9.0:-:*:*:*:*:*:* | 9.0 | Vulnerable | NetApp |
| cpe:2.3:a:netapp:hci:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:management_services_for_element_software:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:ontap_tools:-:*:*:*:*:vmware_vsphere:*:* | not specified by NVD | Vulnerable | NetApp |
- cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* Versions before 1.20.2 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.21:-:*:*:*:*:*:* Versions 1.21 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.21:beta1:*:*:*:*:*:* Versions 1.21 beta1 Vulnerable ·moos-ivp
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:clustered_data_ontap:9.0:-:*:*:*:*:*:* Versions 9.0 Vulnerable ·NetApp
- cpe:2.3:a:netapp:hci:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:management_services_for_element_software:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:ontap_tools:-:*:*:*:*:vmware_vsphere:*:* Versions not specified by NVD Vulnerable ·NetApp
Remediation
Red Hat 1 advisory
- RHSA-2023:6699 Released 2023-11-07 · Red Hat rating Moderatekrb5 security and bug fix update
- Red Hat Enterprise Linux AppStream (v. 9) krb5-devel-1.21.1-1.el9
- Red Hat Enterprise Linux BaseOS (v. 9) krb5-1.21.1-1.el9, krb5-libs-1.21.1-1.el9, krb5-pkinit-1.21.1-1.el9 +4
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat JBoss Enterprise Application Platform 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:6699 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2023:6699 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2023-36054
- 2026-10-03 Alias added: GHSA-39q6-4vrm-fv3g
References
Patch 3
Advisory 2
Sources
- CVE-2023-36054 · CVE Program
- CVE-2023-36054 · NVD
- FIRST EPSS
- GHSA-39q6-4vrm-fv3g · GitHub Advisory Database · CC BY 4.0
- CVE-2023-36054 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences