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CVE-2017-11462

Published: 13 September 2017

Double free vulnerability in MIT Kerberos 5 (aka krb5) allows attackers to have unspecified impact via vectors involving automatic deletion of security contexts on error.

From the Ubuntu Security Team

It was discovered that Kerberos incorrectly handled deletion of security contexts. An attacker could possibly use this issue to cause a denial of service or other unspecified impact.

Priority

Low

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
krb5
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
(1.15.2-1)
cosmic Not vulnerable
(1.15.2-1)
disco Not vulnerable
(1.15.2-1)
eoan Not vulnerable
(1.15.2-1)
focal Not vulnerable
(1.15.2-1)
groovy Not vulnerable
(1.15.2-1)
trusty
Released (1.12+dfsg-2ubuntu5.4)
upstream Needs triage

xenial
Released (1.13.2+dfsg-5ubuntu2.1)
zesty Ignored
(end of life)
hirsute Not vulnerable
(1.15.2-1)
Patches:
upstream: https://github.com/krb5/krb5/commit/56f7b1bc95a2a3eeb420e069e7655fb181ade5cf

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H