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Gentoo Linux Security Advisory GLSA 200509-12 |
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http://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: Apache, mod_ssl: Multiple vulnerabilities |
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Date: September 19, 2005 |
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Bugs: #103554, #104807 |
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ID: 200509-12 |
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|
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Synopsis |
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======== |
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|
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mod_ssl and Apache are vulnerable to a restriction bypass and a |
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potential local privilege escalation. |
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|
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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. mod_ssl provides SSL v2/v3 and TLS v1 support for Apache 1.3 |
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and is also included in Apache 2. |
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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 net-www/mod_ssl < 2.8.24 >= 2.8.24 |
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2 net-www/apache < 2.0.54-r15 >= 2.0.54-r15 |
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------------------------------------------------------------------- |
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2 affected packages on all of their supported architectures. |
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------------------------------------------------------------------- |
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|
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Description |
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=========== |
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|
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mod_ssl contains a security issue when "SSLVerifyClient optional" is |
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configured in the global virtual host configuration (CAN-2005-2700). |
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Also, Apache's httpd includes a PCRE library, which makes it vulnerable |
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to an integer overflow (CAN-2005-2491). |
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|
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Impact |
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====== |
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|
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Under a specific configuration, mod_ssl does not properly enforce the |
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client-based certificate authentication directive, "SSLVerifyClient |
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require", in a per-location context, which could be potentially used by |
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a remote attacker to bypass some restrictions. By creating a specially |
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crafted ".htaccess" file, a local attacker could possibly exploit |
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Apache's vulnerability, which would result in a local privilege |
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escalation. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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|
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Resolution |
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========== |
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|
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All mod_ssl users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-www/mod_ssl-2.8.24" |
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|
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All Apache 2 users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-www/apache-2.0.54-r15" |
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|
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References |
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========== |
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|
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[ 1 ] CAN-2005-2491 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2491 |
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[ 2 ] CAN-2005-2700 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2700 |
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|
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Availability |
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============ |
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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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|
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http://security.gentoo.org/glsa/glsa-200509-12.xml |
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|
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Concerns? |
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========= |
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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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|
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License |
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======= |
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|
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Copyright 2005 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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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/2.0 |