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CVE-2021-36222

Published: Jul 22, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-476
7.5HIGH
NVD MITRE
EPSS Score
10.3%
Top 4.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-476

Affected Products

netapp
commercial·US
active iq unified manager
Hardware Firmware
oncommand insight
Hardware Firmware
oncommand workflow automation
Hardware Firmware
snapcenter
Hardware Firmware
MIT
oss-project·USaka mit krb5, mit kerberos
kerberos 5On-prem
Operating Systems
KerberosOn-prem
Security Products / pki-crypto
debian
oss-project·GBaka debian gnu/linux
debian linuxOn-premOS
Operating Systems / linux-distro
oracle
commercial·USaka oracle corp.
mysql serverOn-premDatabase
Databases / relational
Red Hat Inc.
commercial·USaka red hat
Red Hat Enterprise LinuxOn-premOS
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
and 5 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2021-36222?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://web.mit.edu/kerberos/advisories/
web.mit.edu
https://github.com/krb5/krb5/releases
github.com
https://www.debian.org/security/2021/dsa-4944
debian.org
and 23 more references View all →

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