WaratekVRT Sign in

CVE-2021-36222 MIT Kerberos 5

Affected softwareMIT Kerberos 5
Severity7.5 High CVSS 3.1 2 scores
WeaknessCWE-476
Published22 Jul 2021
Updated14 Oct 2026

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 5 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 11% chance in 30 days A model's forecast, not a report of exploitation. Higher than 96% of all scored CVEs.

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review automated Upstream data
  • Record active
Decided by The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached
Finding This CVE names only products the Waratek agent cannot be installed into (netapp/active_iq_unified_manager, netapp/oncommand_insight, netapp/oncommand_workflow_automation, netapp/snapcenter). They ship as sealed appliance images or as native code with no application JVM, so there is no start-up line to add -javaagent to. The vulnerability may well be a Java one; it is permanently out of ARMR's reach rather than outside its subject.

CVSS

7.5 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update October 2021 ↗ CPU 2021-Q4 Oracle MySQL / Server: Compiling (Kerberos) (8.0.26 and prior)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle MySQL Server: Compiling (Kerberos) 8.0.26 and prior

Products and versions

7 products, 8 version entries
SourceVendorProductSchemeAffected versions
nvd debian debian linux generic 10.0
nvd mit kerberos 5 generic < 1.18.4 · ≥ 1.19.0 and < 1.19.2
nvd netapp active iq unified manager generic any version
nvd netapp oncommand insight generic any version
nvd netapp oncommand workflow automation generic any version
nvd netapp snapcenter generic any version
nvd oracle mysql server generic ≥ 8.0.0 and ≤ 8.0.26

References

URLTags
https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562 Patch, Third Party Advisory
https://github.com/krb5/krb5/releases Release Notes, Third Party Advisory
https://security.netapp.com/advisory/ntap-20211022-0003/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20211104-0007/ Third Party Advisory
https://web.mit.edu/kerberos/advisories/ Not Applicable
https://www.debian.org/security/2021/dsa-4944 Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Timeline

Published2021-07-22By the CVE Program.
NVD record modified2026-10-14NVD's own last-modified date for this record.