CVE-2021-36222

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 5.17% Top 15%
Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://web.mit.edu/kerberos/advisories/ not applicable
https://github.com/krb5/krb5/releases third party advisory release notes
https://www.debian.org/security/2021/dsa-4944 third party advisory vendor advisory
https://www.oracle.com/security-alerts/cpuoct2021.html third party advisory patch
https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562 third party advisory patch
https://security.netapp.com/advisory/ntap-20211022-0003/ third party advisory
https://security.netapp.com/advisory/ntap-20211104-0007/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-36222?
CVE-2021-36222 has been scored as a high severity vulnerability.
How to fix CVE-2021-36222?
To fix CVE-2021-36222, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-36222 being actively exploited in the wild?
It is possible that CVE-2021-36222 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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