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Gentoo Linux Security Advisory GLSA 200907-04 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: Apache: Multiple vulnerabilities |
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Date: July 12, 2009 |
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Bugs: #268154, #271470, #276426, #276792 |
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ID: 200907-04 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities in the Apache HTTP daemon allow for local |
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privilege escalation, information disclosure or Denial of Service |
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attacks. |
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Background |
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========== |
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|
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The Apache HTTP server is one of the most popular web servers on the |
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Internet. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 www-servers/apache < 2.2.11-r2 >= 2.2.11-r2 |
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|
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Description |
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=========== |
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|
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Multiple vulnerabilities have been discovered in the Apache HTTP |
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server: |
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|
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* Jonathan Peatfield reported that the "Options=IncludesNoEXEC" |
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argument to the "AllowOverride" directive is not processed properly |
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(CVE-2009-1195). |
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|
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* Sander de Boer discovered that the AJP proxy module (mod_proxy_ajp) |
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does not correctly handle POST requests that do not contain a request |
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body (CVE-2009-1191). |
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|
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* The vendor reported that the HTTP proxy module (mod_proxy_http), |
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when being used as a reverse proxy, does not properly handle requests |
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containing more data as stated in the "Content-Length" header |
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(CVE-2009-1890). |
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|
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* Francois Guerraz discovered that mod_deflate does not abort the |
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compression of large files even when the requesting connection is |
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closed prematurely (CVE-2009-1891). |
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|
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Impact |
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====== |
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|
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A local attacker could circumvent restrictions put up by the server |
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administrator and execute arbitrary commands with the privileges of the |
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user running the Apache server. A remote attacker could send multiple |
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requests to a server with the AJP proxy module, possibly resulting in |
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the disclosure of a request intended for another client, or cause a |
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Denial of Service by sending specially crafted requests to servers |
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running mod_proxy_http or mod_deflate. |
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|
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Workaround |
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========== |
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|
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Remove "include", "mod_proxy_ajp", "mod_proxy_http" and "deflate" from |
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APACHE2_MODULES in make.conf and rebuild Apache, or disable the |
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aforementioned modules in the Apache configuration. |
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Resolution |
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========== |
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All Apache users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=www-servers/apache-2.2.11-r2" |
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References |
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========== |
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[ 1 ] CVE-2009-1195 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1195 |
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[ 2 ] CVE-2009-1191 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1191 |
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[ 3 ] CVE-2009-1890 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1890 |
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[ 4 ] CVE-2009-1891 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1891 |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200907-04.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2009 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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