| 1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 2 |
Gentoo Linux Security Advisory GLSA 200509-12 |
| 3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 4 |
http://security.gentoo.org/ |
| 5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 6 |
|
| 7 |
Severity: Normal |
| 8 |
Title: Apache, mod_ssl: Multiple vulnerabilities |
| 9 |
Date: September 19, 2005 |
| 10 |
Bugs: #103554, #104807 |
| 11 |
ID: 200509-12 |
| 12 |
|
| 13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 14 |
|
| 15 |
Synopsis |
| 16 |
======== |
| 17 |
|
| 18 |
mod_ssl and Apache are vulnerable to a restriction bypass and a |
| 19 |
potential local privilege escalation. |
| 20 |
|
| 21 |
Background |
| 22 |
========== |
| 23 |
|
| 24 |
The Apache HTTP server is one of the most popular web servers on the |
| 25 |
Internet. mod_ssl provides SSL v2/v3 and TLS v1 support for Apache 1.3 |
| 26 |
and is also included in Apache 2. |
| 27 |
|
| 28 |
Affected packages |
| 29 |
================= |
| 30 |
|
| 31 |
------------------------------------------------------------------- |
| 32 |
Package / Vulnerable / Unaffected |
| 33 |
------------------------------------------------------------------- |
| 34 |
1 net-www/mod_ssl < 2.8.24 >= 2.8.24 |
| 35 |
2 net-www/apache < 2.0.54-r15 >= 2.0.54-r15 |
| 36 |
------------------------------------------------------------------- |
| 37 |
2 affected packages on all of their supported architectures. |
| 38 |
------------------------------------------------------------------- |
| 39 |
|
| 40 |
Description |
| 41 |
=========== |
| 42 |
|
| 43 |
mod_ssl contains a security issue when "SSLVerifyClient optional" is |
| 44 |
configured in the global virtual host configuration (CAN-2005-2700). |
| 45 |
Also, Apache's httpd includes a PCRE library, which makes it vulnerable |
| 46 |
to an integer overflow (CAN-2005-2491). |
| 47 |
|
| 48 |
Impact |
| 49 |
====== |
| 50 |
|
| 51 |
Under a specific configuration, mod_ssl does not properly enforce the |
| 52 |
client-based certificate authentication directive, "SSLVerifyClient |
| 53 |
require", in a per-location context, which could be potentially used by |
| 54 |
a remote attacker to bypass some restrictions. By creating a specially |
| 55 |
crafted ".htaccess" file, a local attacker could possibly exploit |
| 56 |
Apache's vulnerability, which would result in a local privilege |
| 57 |
escalation. |
| 58 |
|
| 59 |
Workaround |
| 60 |
========== |
| 61 |
|
| 62 |
There is no known workaround at this time. |
| 63 |
|
| 64 |
Resolution |
| 65 |
========== |
| 66 |
|
| 67 |
All mod_ssl users should upgrade to the latest version: |
| 68 |
|
| 69 |
# emerge --sync |
| 70 |
# emerge --ask --oneshot --verbose ">=net-www/mod_ssl-2.8.24" |
| 71 |
|
| 72 |
All Apache 2 users should upgrade to the latest version: |
| 73 |
|
| 74 |
# emerge --sync |
| 75 |
# emerge --ask --oneshot --verbose ">=net-www/apache-2.0.54-r15" |
| 76 |
|
| 77 |
References |
| 78 |
========== |
| 79 |
|
| 80 |
[ 1 ] CAN-2005-2491 |
| 81 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2491 |
| 82 |
[ 2 ] CAN-2005-2700 |
| 83 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2700 |
| 84 |
|
| 85 |
Availability |
| 86 |
============ |
| 87 |
|
| 88 |
This GLSA and any updates to it are available for viewing at |
| 89 |
the Gentoo Security Website: |
| 90 |
|
| 91 |
http://security.gentoo.org/glsa/glsa-200509-12.xml |
| 92 |
|
| 93 |
Concerns? |
| 94 |
========= |
| 95 |
|
| 96 |
Security is a primary focus of Gentoo Linux and ensuring the |
| 97 |
confidentiality and security of our users machines is of utmost |
| 98 |
importance to us. Any security concerns should be addressed to |
| 99 |
security@g.o or alternatively, you may file a bug at |
| 100 |
http://bugs.gentoo.org. |
| 101 |
|
| 102 |
License |
| 103 |
======= |
| 104 |
|
| 105 |
Copyright 2005 Gentoo Foundation, Inc; referenced text |
| 106 |
belongs to its owner(s). |
| 107 |
|
| 108 |
The contents of this document are licensed under the |
| 109 |
Creative Commons - Attribution / Share Alike license. |
| 110 |
|
| 111 |
http://creativecommons.org/licenses/by-sa/2.0 |
Archives