1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2 |
Gentoo Linux Security Advisory GLSA 200907-02 |
3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
4 |
http://security.gentoo.org/ |
5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
6 |
|
7 |
Severity: Normal |
8 |
Title: ModSecurity: Denial of Service |
9 |
Date: July 02, 2009 |
10 |
Bugs: #262302 |
11 |
ID: 200907-02 |
12 |
|
13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
14 |
|
15 |
Synopsis |
16 |
======== |
17 |
|
18 |
Two vulnerabilities in ModSecurity might lead to a Denial of Service. |
19 |
|
20 |
Background |
21 |
========== |
22 |
|
23 |
ModSecurity is a popular web application firewall for the Apache HTTP |
24 |
server. |
25 |
|
26 |
Affected packages |
27 |
================= |
28 |
|
29 |
------------------------------------------------------------------- |
30 |
Package / Vulnerable / Unaffected |
31 |
------------------------------------------------------------------- |
32 |
1 www-apache/mod_security < 2.5.9 >= 2.5.9 |
33 |
|
34 |
Description |
35 |
=========== |
36 |
|
37 |
Multiple vulnerabilities were discovered in ModSecurity: |
38 |
|
39 |
* Juan Galiana Lara of ISecAuditors discovered a NULL pointer |
40 |
dereference when processing multipart requests without a part header |
41 |
name (CVE-2009-1902). |
42 |
|
43 |
* Steve Grubb of Red Hat reported that the "PDF XSS protection" |
44 |
feature does not properly handle HTTP requests to a PDF file that do |
45 |
not use the GET method (CVE-2009-1903). |
46 |
|
47 |
Impact |
48 |
====== |
49 |
|
50 |
A remote attacker might send requests containing specially crafted |
51 |
multipart data or send certain requests to access a PDF file, possibly |
52 |
resulting in a Denial of Service (crash) of the Apache HTTP daemon. |
53 |
NOTE: The PDF XSS protection is not enabled by default. |
54 |
|
55 |
Workaround |
56 |
========== |
57 |
|
58 |
There is no known workaround at this time. |
59 |
|
60 |
Resolution |
61 |
========== |
62 |
|
63 |
All ModSecurity users should upgrade to the latest version: |
64 |
|
65 |
# emerge --sync |
66 |
# emerge --ask --oneshot --verbose ">=www-apache/mod_security-2.5.9" |
67 |
|
68 |
References |
69 |
========== |
70 |
|
71 |
[ 1 ] CVE-2009-1902 |
72 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1902 |
73 |
[ 2 ] CVE-2009-1903 |
74 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1903 |
75 |
|
76 |
Availability |
77 |
============ |
78 |
|
79 |
This GLSA and any updates to it are available for viewing at |
80 |
the Gentoo Security Website: |
81 |
|
82 |
http://security.gentoo.org/glsa/glsa-200907-02.xml |
83 |
|
84 |
Concerns? |
85 |
========= |
86 |
|
87 |
Security is a primary focus of Gentoo Linux and ensuring the |
88 |
confidentiality and security of our users machines is of utmost |
89 |
importance to us. Any security concerns should be addressed to |
90 |
security@g.o or alternatively, you may file a bug at |
91 |
http://bugs.gentoo.org. |
92 |
|
93 |
License |
94 |
======= |
95 |
|
96 |
Copyright 2009 Gentoo Foundation, Inc; referenced text |
97 |
belongs to its owner(s). |
98 |
|
99 |
The contents of this document are licensed under the |
100 |
Creative Commons - Attribution / Share Alike license. |
101 |
|
102 |
http://creativecommons.org/licenses/by-sa/2.5 |