58 lines
2.1 KiB
XML
58 lines
2.1 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
|
||
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
|
||
<glsa id="201701-22">
|
||
<title>NGINX: Privilege escalation</title>
|
||
<synopsis>Gentoo's NGINX ebuilds are vulnerable to privilege escalation due
|
||
to the way log files are handled.
|
||
</synopsis>
|
||
<product type="ebuild">nginx</product>
|
||
<announced>2017-01-11</announced>
|
||
<revised count="1">2017-01-11</revised>
|
||
<bug>605008</bug>
|
||
<access>local</access>
|
||
<affected>
|
||
<package name="www-servers/nginx" auto="yes" arch="*">
|
||
<unaffected range="ge">1.10.2-r3</unaffected>
|
||
<vulnerable range="lt">1.10.2-r3</vulnerable>
|
||
</package>
|
||
</affected>
|
||
<background>
|
||
<p>nginx is a robust, small, and high performance HTTP and reverse proxy
|
||
server.
|
||
</p>
|
||
</background>
|
||
<description>
|
||
<p>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.
|
||
</p>
|
||
</description>
|
||
<impact type="normal">
|
||
<p>A local attacker, who either is already NGINX’s system user or belongs
|
||
to NGINX’s group, could potentially escalate privileges.
|
||
</p>
|
||
</impact>
|
||
<workaround>
|
||
<p>Ensure that no untrusted user can create files in directories which are
|
||
used by NGINX (or an NGINX vhost) to store log files.
|
||
</p>
|
||
</workaround>
|
||
<resolution>
|
||
<p>All NGINX users should upgrade to the latest ebuild revision:</p>
|
||
|
||
<code>
|
||
# emerge --sync
|
||
# emerge --ask --oneshot --verbose ">=www-servers/nginx-1.10.2-r3"
|
||
</code>
|
||
</resolution>
|
||
<references>
|
||
<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1247">CVE-2016-1247</uri>
|
||
<uri link="https://www.debian.org/security/2016/dsa-3701">DSA-3701</uri>
|
||
<uri link="https://legalhackers.com/advisories/Nginx-Exploit-Deb-Root-PrivEsc-CVE-2016-1247.html">
|
||
Technical analysis
|
||
</uri>
|
||
</references>
|
||
<metadata tag="requester" timestamp="2017-01-10T15:37:19Z">whissi</metadata>
|
||
<metadata tag="submitter" timestamp="2017-01-11T12:18:42Z">whissi</metadata>
|
||
</glsa>
|