Vulnerability Monitor

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CVE-2021-36222

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.

Published

2021-07-22T18:15:23.337

Last Modified

2024-11-21T06:13:20.520

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mit	kerberos_5	< 1.18.4	Yes
Application	mit	kerberos_5	< 1.19.2	Yes
Operating System	debian	debian_linux	10.0	Yes
Application	netapp	active_iq_unified_manager	-	Yes
Application	netapp	active_iq_unified_manager	-	Yes
Application	netapp	oncommand_insight	-	Yes
Application	netapp	oncommand_workflow_automation	-	Yes
Application	netapp	snapcenter	-	Yes
Application	oracle	mysql_server	≤ 8.0.26	Yes

References

https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562 Patch, Third Party Advisory ([email protected])
https://github.com/krb5/krb5/releases Release Notes, Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20211022-0003/ Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20211104-0007/ Third Party Advisory ([email protected])
https://web.mit.edu/kerberos/advisories/ Not Applicable ([email protected])
https://www.debian.org/security/2021/dsa-4944 Third Party Advisory ([email protected])
https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory ([email protected])
https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/krb5/krb5/releases Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20211022-0003/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20211104-0007/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://web.mit.edu/kerberos/advisories/ Not Applicable (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4944 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)