CVE-2021-36222

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-36222
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-36222.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-36222
Downstream
Related
Published
2021-07-22T18:15:23Z
Modified
2025-08-19T14:27:17.005088Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

ecverify in kdc/kdcpreauth_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

Affected packages

Alpine:v3.12 / krb5

Package

Name
krb5
Purl
pkg:apk/alpine/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4-r0

Affected versions

1.*

1.11-r0
1.11-r1
1.11-r2
1.11.2-r0
1.11.2-r1
1.11.2-r2
1.11.3-r0
1.11.4-r0
1.12.1-r0
1.12.2-r0
1.13-r0
1.13-r1
1.13.1-r0
1.13.1-r1
1.13.2-r0
1.13.2-r1
1.13.2-r2
1.14-r0
1.14-r1
1.14-r2
1.14.3-r0
1.14.3-r1
1.14.3-r2
1.15.1-r0
1.15.2-r0
1.15.2-r1
1.15.2-r2
1.15.3-r0
1.15.3-r1
1.15.4-r0
1.15.5-r0
1.17-r0
1.17.1-r0
1.18-r0
1.18.1-r0
1.18.2-r0
1.18.3-r0

Alpine:v3.13 / krb5

Package

Name
krb5
Purl
pkg:apk/alpine/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4-r0

Affected versions

1.*

1.11-r0
1.11-r1
1.11-r2
1.11.2-r0
1.11.2-r1
1.11.2-r2
1.11.3-r0
1.11.4-r0
1.12.1-r0
1.12.2-r0
1.13-r0
1.13-r1
1.13.1-r0
1.13.1-r1
1.13.2-r0
1.13.2-r1
1.13.2-r2
1.14-r0
1.14-r1
1.14-r2
1.14.3-r0
1.14.3-r1
1.14.3-r2
1.15.1-r0
1.15.2-r0
1.15.2-r1
1.15.2-r2
1.15.3-r0
1.15.3-r1
1.15.4-r0
1.15.5-r0
1.17-r0
1.17.1-r0
1.18-r0
1.18.1-r0
1.18.2-r0
1.18.3-r0
1.18.3-r1

Alpine:v3.14 / krb5

Package

Name
krb5
Purl
pkg:apk/alpine/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4-r0

Affected versions

1.*

1.11-r0
1.11-r1
1.11-r2
1.11.2-r0
1.11.2-r1
1.11.2-r2
1.11.3-r0
1.11.4-r0
1.12.1-r0
1.12.2-r0
1.13-r0
1.13-r1
1.13.1-r0
1.13.1-r1
1.13.2-r0
1.13.2-r1
1.13.2-r2
1.14-r0
1.14-r1
1.14-r2
1.14.3-r0
1.14.3-r1
1.14.3-r2
1.15.1-r0
1.15.2-r0
1.15.2-r1
1.15.2-r2
1.15.3-r0
1.15.3-r1
1.15.4-r0
1.15.5-r0
1.17-r0
1.17.1-r0
1.18-r0
1.18.1-r0
1.18.2-r0
1.18.3-r0
1.18.3-r1

Alpine:v3.15 / krb5

Package

Name
krb5
Purl
pkg:apk/alpine/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4-r0

Affected versions

1.*

1.11-r0
1.11-r1
1.11-r2
1.11.2-r0
1.11.2-r1
1.11.2-r2
1.11.3-r0
1.11.4-r0
1.12.1-r0
1.12.2-r0
1.13-r0
1.13-r1
1.13.1-r0
1.13.1-r1
1.13.2-r0
1.13.2-r1
1.13.2-r2
1.14-r0
1.14-r1
1.14-r2
1.14.3-r0
1.14.3-r1
1.14.3-r2
1.15.1-r0
1.15.2-r0
1.15.2-r1
1.15.2-r2
1.15.3-r0
1.15.3-r1
1.15.4-r0
1.15.5-r0
1.17-r0
1.17.1-r0
1.18-r0
1.18.1-r0
1.18.2-r0
1.18.3-r0
1.18.3-r1

Alpine:v3.16 / krb5

Package

Name
krb5
Purl
pkg:apk/alpine/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4-r0

Affected versions

1.*

1.11-r0
1.11-r1
1.11-r2
1.11.2-r0
1.11.2-r1
1.11.2-r2
1.11.3-r0
1.11.4-r0
1.12.1-r0
1.12.2-r0
1.13-r0
1.13-r1
1.13.1-r0
1.13.1-r1
1.13.2-r0
1.13.2-r1
1.13.2-r2
1.14-r0
1.14-r1
1.14-r2
1.14.3-r0
1.14.3-r1
1.14.3-r2
1.15.1-r0
1.15.2-r0
1.15.2-r1
1.15.2-r2
1.15.3-r0
1.15.3-r1
1.15.4-r0
1.15.5-r0
1.17-r0
1.17.1-r0
1.18-r0
1.18.1-r0
1.18.2-r0
1.18.3-r0
1.18.3-r1

Alpine:v3.17 / krb5

Package

Name
krb5
Purl
pkg:apk/alpine/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4-r0

Affected versions

1.*

1.11-r0
1.11-r1
1.11-r2
1.11.2-r0
1.11.2-r1
1.11.2-r2
1.11.3-r0
1.11.4-r0
1.12.1-r0
1.12.2-r0
1.13-r0
1.13-r1
1.13.1-r0
1.13.1-r1
1.13.2-r0
1.13.2-r1
1.13.2-r2
1.14-r0
1.14-r1
1.14-r2
1.14.3-r0
1.14.3-r1
1.14.3-r2
1.15.1-r0
1.15.2-r0
1.15.2-r1
1.15.2-r2
1.15.3-r0
1.15.3-r1
1.15.4-r0
1.15.5-r0
1.17-r0
1.17.1-r0
1.18-r0
1.18.1-r0
1.18.2-r0
1.18.3-r0
1.18.3-r1

Alpine:v3.18 / krb5

Package

Name
krb5
Purl
pkg:apk/alpine/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4-r0

Affected versions

1.*

1.11-r0
1.11-r1
1.11-r2
1.11.2-r0
1.11.2-r1
1.11.2-r2
1.11.3-r0
1.11.4-r0
1.12.1-r0
1.12.2-r0
1.13-r0
1.13-r1
1.13.1-r0
1.13.1-r1
1.13.2-r0
1.13.2-r1
1.13.2-r2
1.14-r0
1.14-r1
1.14-r2
1.14.3-r0
1.14.3-r1
1.14.3-r2
1.15.1-r0
1.15.2-r0
1.15.2-r1
1.15.2-r2
1.15.3-r0
1.15.3-r1
1.15.4-r0
1.15.5-r0
1.17-r0
1.17.1-r0
1.18-r0
1.18.1-r0
1.18.2-r0
1.18.3-r0
1.18.3-r1

Alpine:v3.19 / krb5

Package

Name
krb5
Purl
pkg:apk/alpine/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4-r0

Affected versions

1.*

1.11-r0
1.11-r1
1.11-r2
1.11.2-r0
1.11.2-r1
1.11.2-r2
1.11.3-r0
1.11.4-r0
1.12.1-r0
1.12.2-r0
1.13-r0
1.13-r1
1.13.1-r0
1.13.1-r1
1.13.2-r0
1.13.2-r1
1.13.2-r2
1.14-r0
1.14-r1
1.14-r2
1.14.3-r0
1.14.3-r1
1.14.3-r2
1.15.1-r0
1.15.2-r0
1.15.2-r1
1.15.2-r2
1.15.3-r0
1.15.3-r1
1.15.4-r0
1.15.5-r0
1.17-r0
1.17.1-r0
1.18-r0
1.18.1-r0
1.18.2-r0
1.18.3-r0
1.18.3-r1

Alpine:v3.20 / krb5

Package

Name
krb5
Purl
pkg:apk/alpine/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4-r0

Affected versions

1.*

1.11-r0
1.11-r1
1.11-r2
1.11.2-r0
1.11.2-r1
1.11.2-r2
1.11.3-r0
1.11.4-r0
1.12.1-r0
1.12.2-r0
1.13-r0
1.13-r1
1.13.1-r0
1.13.1-r1
1.13.2-r0
1.13.2-r1
1.13.2-r2
1.14-r0
1.14-r1
1.14-r2
1.14.3-r0
1.14.3-r1
1.14.3-r2
1.15.1-r0
1.15.2-r0
1.15.2-r1
1.15.2-r2
1.15.3-r0
1.15.3-r1
1.15.4-r0
1.15.5-r0
1.17-r0
1.17.1-r0
1.18-r0
1.18.1-r0
1.18.2-r0
1.18.3-r0
1.18.3-r1

Alpine:v3.21 / krb5

Package

Name
krb5
Purl
pkg:apk/alpine/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4-r0

Affected versions

1.*

1.11-r0
1.11-r1
1.11-r2
1.11.2-r0
1.11.2-r1
1.11.2-r2
1.11.3-r0
1.11.4-r0
1.12.1-r0
1.12.2-r0
1.13-r0
1.13-r1
1.13.1-r0
1.13.1-r1
1.13.2-r0
1.13.2-r1
1.13.2-r2
1.14-r0
1.14-r1
1.14-r2
1.14.3-r0
1.14.3-r1
1.14.3-r2
1.15.1-r0
1.15.2-r0
1.15.2-r1
1.15.2-r2
1.15.3-r0
1.15.3-r1
1.15.4-r0
1.15.5-r0
1.17-r0
1.17.1-r0
1.18-r0
1.18.1-r0
1.18.2-r0
1.18.3-r0
1.18.3-r1

Alpine:v3.22 / krb5

Package

Name
krb5
Purl
pkg:apk/alpine/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4-r0

Affected versions

1.*

1.11-r0
1.11-r1
1.11-r2
1.11.2-r0
1.11.2-r1
1.11.2-r2
1.11.3-r0
1.11.4-r0
1.12.1-r0
1.12.2-r0
1.13-r0
1.13-r1
1.13.1-r0
1.13.1-r1
1.13.2-r0
1.13.2-r1
1.13.2-r2
1.14-r0
1.14-r1
1.14-r2
1.14.3-r0
1.14.3-r1
1.14.3-r2
1.15.1-r0
1.15.2-r0
1.15.2-r1
1.15.2-r2
1.15.3-r0
1.15.3-r1
1.15.4-r0
1.15.5-r0
1.17-r0
1.17.1-r0
1.18-r0
1.18.1-r0
1.18.2-r0
1.18.3-r0
1.18.3-r1

Debian:11 / krb5

Package

Name
krb5
Purl
pkg:deb/debian/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.3-6

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / krb5

Package

Name
krb5
Purl
pkg:deb/debian/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.3-6

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / krb5

Package

Name
krb5
Purl
pkg:deb/debian/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.3-6

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / krb5

Package

Name
krb5
Purl
pkg:deb/debian/krb5?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.3-6

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/krb5/krb5

Affected ranges

Type
GIT
Repo
https://github.com/krb5/krb5
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
fc98f520caefff2e5ee9a0026fdf5109944b3562