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CVE-2017-7562

Published: 26 July 2018

An authentication bypass flaw was found in the way krb5's certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.

Notes

AuthorNote
ratliff
upstream says introduced in 1.16

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
krb5
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Not vulnerable

trusty Not vulnerable

xenial Not vulnerable

zesty Not vulnerable

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N