Executive Summary

Informations
Name CVE-2021-36222 First vendor Publication 2021-07-22
Vendor Cve Last vendor Modification 2021-08-02

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36222

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-476 NULL Pointer Dereference

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 91
Os 1

Sources (Detail)

Source Url
CONFIRM https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562
DEBIAN https://www.debian.org/security/2021/dsa-4944
MISC https://github.com/krb5/krb5/releases
https://web.mit.edu/kerberos/advisories/

Alert History

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Date Informations
2021-08-03 00:22:53
  • Multiple Updates
2021-07-29 01:42:14
  • Multiple Updates
2021-07-29 01:42:13
  • Multiple Updates
2021-07-28 17:22:52
  • Multiple Updates
2021-07-26 05:22:49
  • Multiple Updates
2021-07-23 00:22:50
  • First insertion