[ GLSA 202008-23 ] chrony

[GLSA]

Gentoo Linux Security Advisory

Title: chrony: Symlink vulnerability (GLSA 202008-23)
Severity: normal
Exploitable: local
Date: 2020-08-30
Bug(s): #738154
ID: 202008-23

Synopsis

A vulnerability in chrony may allow a privileged attacker to cause
data loss via a symlink.


Background

chrony is a versatile implementation of the Network Time Protocol (NTP).

Affected Packages

Package: net-misc/chrony
Vulnerable: < 3.5.1
Unaffected: >= 3.5.1
Architectures: All supported architectures


Description

It was found that chrony did not check whether its PID file was a
symlink.


Impact

A local attacker could perform symlink attack(s) to overwrite arbitrary
files with root privileges.


Workaround

There is no known workaround at this time.

Resolution

All chrony users should upgrade to the latest version: