glsa-200909-18.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200909-18">
  <title>nginx: Remote execution of arbitrary code</title>
  <synopsis>
    A buffer underflow vulnerability in the request URI processing of nginx
    might enable remote attackers to execute arbitrary code or cause a Denial
    of Service.
  </synopsis>
  <product type="ebuild">nginx</product>
  <announced>2009-09-18</announced>
  <revised count="01">2009-09-18</revised>
  <bug>285162</bug>
  <access>remote</access>
  <affected>
    <package name="www-servers/nginx" auto="yes" arch="*">
      <unaffected range="rge">0.5.38</unaffected>
      <unaffected range="rge">0.6.39</unaffected>
      <unaffected range="ge">0.7.62</unaffected>
      <vulnerable range="lt">0.7.62</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    nginx is a robust, small and high performance HTTP and reverse proxy
    server.
    </p>
  </background>
  <description>
    <p>
    Chris Ries reported a heap-based buffer underflow in the
    ngx_http_parse_complex_uri() function in http/ngx_http_parse.c when
    parsing the request URI.
    </p>
  </description>
  <impact type="high">
    <p>
    A remote attacker might send a specially crafted request URI to a nginx
    server, possibly resulting in the remote execution of arbitrary code
    with the privileges of the user running the server, or a Denial of
    Service. NOTE: By default, nginx runs as the "nginx" user.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All nginx 0.5.x users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=www-servers/nginx-0.5.38"</code>
    <p>
    All nginx 0.6.x users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=www-servers/nginx-0.6.39"</code>
    <p>
    All nginx 0.7.x users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=www-servers/nginx-0.7.62"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2629">CVE-2009-2629</uri>
  </references>
  <metadata tag="requester" timestamp="2009-09-14T19:21:09Z">
    a3li
  </metadata>
  <metadata tag="submitter" timestamp="2009-09-14T19:51:52Z">
    a3li
  </metadata>
  <metadata tag="bugReady" timestamp="2009-09-18T19:40:49Z">
    a3li
  </metadata>
</glsa>