High severity · published Jul 22, 2021
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…
7.5
CVSS
10.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)10.5% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AI
Active IQ Unified Manager · Netapp
All versions, or not specified · source: NVD
DL
Debian Linux · Debian
10.0 · source: NVD
K5
Kerberos 5 · Mit
before 1.18.4; 1.19.0 before 1.19.2 · source: NVD
MS
Mysql Server · Oracle
8.0.0 through 8.0.26 · source: NVD
OI
Oncommand Insight · Netapp
All versions, or not specified · source: NVD
OW
Oncommand Workflow Automation · Netapp
All versions, or not specified · source: NVD
SN
Snapcenter · Netapp
All versions, or not specified · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36222
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36222
Patch
https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562
Release Notes
https://github.com/krb5/krb5/releases
Third Party Advisory
https://security.netapp.com/advisory/ntap-20211022-0003/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20211104-0007/
Not Applicable
https://web.mit.edu/kerberos/advisories/
Third Party Advisory
https://www.debian.org/security/2021/dsa-4944
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