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CVE-2018-6558

Published: 23 August 2018

The pam_fscrypt module in fscrypt before 0.2.4 may incorrectly restore primary and supplementary group IDs to the values associated with the root user, which allows attackers to gain privileges via a successful login through certain applications that use Linux-PAM (aka pam).

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
fscrypt
Launchpad, Ubuntu, Debian
bionic
Released (0.2.2-0ubuntu2.1)
cosmic Ignored
(end of life)
disco Not vulnerable
(0.2.4-2)
trusty Does not exist

upstream Needed

xenial Does not exist

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