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Gentoo Linux Security Advisory 201706-01

Gentoo Linux Security Advisory 201706-01
Posted Jun 6, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201706-1 - Gentoo's MUNGE ebuilds are vulnerable to privilege escalation due to improper permissions. Versions less than 0.5.10-r2 are affected.

tags | advisory
systems | linux, gentoo
SHA-256 | ddf8f56e12b0d3c7518221d7e9b4df31913be4ecf0f0e8f2ecbf40540dfea5bc

Gentoo Linux Security Advisory 201706-01

Change Mirror Download

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Gentoo Linux Security Advisory GLSA 201706-01
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https://security.gentoo.org/
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Severity: High
Title: MUNGE: Privilege escalation
Date: June 06, 2017
Bugs: #602596
ID: 201706-01

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Synopsis
========

Gentoo's MUNGE ebuilds are vulnerable to privilege escalation due to
improper permissions.

Background
==========

An authentication service for creating and validating credentials.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-auth/munge < 0.5.10-r2 >= 0.5.10-r2

Description
===========

It was discovered that Gentoo's default MUNGE installation suffered
from a privilege escalation vulnerability (munge user to root) due to
improper permissions and a runscript which called chown() on a user
controlled file.

Impact
======

A local attacker, who either is already MUNGE's system user or belongs
to MUNGE's group, could potentially escalate privileges.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All MUNGE users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-auth/munge-0.5.10-r2"

References
==========


Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/201706-01

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2017 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5


--khfe0URw4dcNMjq7fl6t5k64A8BHjiRWW--

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