CVE-2018-5349 Information

Description

A vulnerability has been found in Heimdal PRO v2.2.190 but it is most likely also present in Heimdal FREE and Heimdal CORP. Faulty permissions on the directory \C:\ProgramData\Heimdal Security\Heimdal Agent\ allow BUILTIN\Users to write new files to the directory. On startup the process Heimdal.MonitorServices.exe running as SYSTEM will attempt to load version.dll from this directory. Placing a malicious version.dll in this directory will result in privilege escalation. NOTE: any affected Heimdal products are completely unrelated to the Heimdal vendor of a Kerberos 5 product on the h5l.org web site.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://improsec.com/blog/heimdal-advisory-1

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8