[ GLSA 200601-01 ] pinentry: Local privilege escalation

[GLSA]

Gentoo Linux Security Advisory

Title: pinentry: Local privilege escalation (GLSA 200601-01)
Severity: normal
Exploitable: local
Date: January 03, 2006
Bug(s): #116822
ID: 200601-01

Synopsis

pinentry is vulnerable to privilege escalation.

Background

pinentry is a collection of simple PIN or passphrase entry dialogs which utilize the Assuan protocol.

Affected Packages

Package: app-crypt/pinentry
Vulnerable: < 0.7.2-r2
Unaffected: >= 0.7.2-r2
Architectures: All supported architectures


Description

Tavis Ormandy of the Gentoo Linux Security Audit Team has discovered that the pinentry ebuild incorrectly sets the permissions of the pinentry binaries upon installation, so that the sgid bit is set making them execute with the privileges of group ID 0.

Impact

A user of pinentry could potentially read and overwrite files with a group ID of 0.

Workaround

There is no known workaround at this time.

Resolution

All pinentry users should upgrade to the latest version: