Vulnerability Details : CVE-2021-36222
ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-36222
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*
- cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-36222
5.78%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 90 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-36222
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-36222
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-36222
-
https://github.com/krb5/krb5/releases
Releases · krb5/krb5 · GitHubRelease Notes;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20211104-0007/
CVE-2021-36222 MIT Kerberos 5 Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562
Fix KDC null deref on bad encrypted challenge · krb5/krb5@fc98f52 · GitHubPatch;Third Party Advisory
-
https://www.debian.org/security/2021/dsa-4944
Debian -- Security Information -- DSA-4944-1 krb5Third Party Advisory
-
https://www.oracle.com/security-alerts/cpuoct2021.html
Oracle Critical Patch Update Advisory - October 2021Patch;Third Party Advisory
-
https://web.mit.edu/kerberos/advisories/
Kerberos Security AdvisoriesNot Applicable
-
https://security.netapp.com/advisory/ntap-20211022-0003/
October 2021 MySQL Server Vulnerabilities in NetApp Products | NetApp Product SecurityThird Party Advisory
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