exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Gentoo Linux Security Advisory 201701-22

Gentoo Linux Security Advisory 201701-22
Posted Jan 11, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201701-22 - Gentoo's NGINX ebuilds are vulnerable to privilege escalation due to the way log files are handled. Versions less than 1.10.2-r3 are affected.

tags | advisory
systems | linux, gentoo
advisories | CVE-2016-1247
SHA-256 | d5737c96d2fd4eb019f4603f8785e51a870d534eae95402c0859a4059ad57ad8

Gentoo Linux Security Advisory 201701-22

Change Mirror Download

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 201701-22
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: NGINX: Privilege escalation
Date: January 11, 2017
Bugs: #605008
ID: 201701-22

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

Gentoo's NGINX ebuilds are vulnerable to privilege escalation due to
the way log files are handled.

Background
==========

nginx is a robust, small, and high performance HTTP and reverse proxy
server.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 www-servers/nginx < 1.10.2-r3 >= 1.10.2-r3

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

It was discovered that Gentoo's default NGINX installation applied
similar problematic permissions on "/var/log/nginx" as Debian
(DSA-3701) and is therefore vulnerable to the same attack described in
CVE-2016-1247.

Impact
======

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

Workaround
==========

Ensure that no untrusted user can create files in directories which are
used by NGINX (or an NGINX vhost) to store log files.

Resolution
==========

All NGINX users should upgrade to the latest ebuild revision:

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-servers/nginx-1.10.2-r3"

References
==========

[ 1 ] CVE-2016-1247
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1247
[ 2 ] DSA-3701
https://www.debian.org/security/2016/dsa-3701
[ 3 ] Technical analysis
https://legalhackers.com/advisories/Nginx-Exploit-Deb-Root-PrivEsc-=
CVE-2016-1247.html

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

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

https://security.gentoo.org/glsa/201701-22

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


Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close