NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package krb5-debugsource (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL8-KRB5DEBUGSOURCE-1365049
- published26 Jul 2021
- disclosed12 Jul 2021
Introduced: 12 Jul 2021
CVE-2021-36222 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream krb5-debugsource package and not the krb5-debugsource package as distributed by RHEL.
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.
References
- https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562
- https://access.redhat.com/security/cve/CVE-2021-36222
- https://www.debian.org/security/2021/dsa-4944
- https://github.com/krb5/krb5/releases
- https://web.mit.edu/kerberos/advisories/
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://access.redhat.com/errata/RHSA-2021:3576
- https://security.netapp.com/advisory/ntap-20211022-0003/
- https://security.netapp.com/advisory/ntap-20211104-0007/
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html