| 1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 2 |
Gentoo Linux Security Advisory GLSA 200909-18 |
| 3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 4 |
http://security.gentoo.org/ |
| 5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 6 |
|
| 7 |
Severity: High |
| 8 |
Title: nginx: Remote execution of arbitrary code |
| 9 |
Date: September 18, 2009 |
| 10 |
Bugs: #285162 |
| 11 |
ID: 200909-18 |
| 12 |
|
| 13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 14 |
|
| 15 |
Synopsis |
| 16 |
======== |
| 17 |
|
| 18 |
A buffer underflow vulnerability in the request URI processing of nginx |
| 19 |
might enable remote attackers to execute arbitrary code or cause a |
| 20 |
Denial of Service. |
| 21 |
|
| 22 |
Background |
| 23 |
========== |
| 24 |
|
| 25 |
nginx is a robust, small and high performance HTTP and reverse proxy |
| 26 |
server. |
| 27 |
|
| 28 |
Affected packages |
| 29 |
================= |
| 30 |
|
| 31 |
------------------------------------------------------------------- |
| 32 |
Package / Vulnerable / Unaffected |
| 33 |
------------------------------------------------------------------- |
| 34 |
1 www-servers/nginx < 0.7.62 *>= 0.5.38 |
| 35 |
*>= 0.6.39 |
| 36 |
>= 0.7.62 |
| 37 |
|
| 38 |
Description |
| 39 |
=========== |
| 40 |
|
| 41 |
Chris Ries reported a heap-based buffer underflow in the |
| 42 |
ngx_http_parse_complex_uri() function in http/ngx_http_parse.c when |
| 43 |
parsing the request URI. |
| 44 |
|
| 45 |
Impact |
| 46 |
====== |
| 47 |
|
| 48 |
A remote attacker might send a specially crafted request URI to a nginx |
| 49 |
server, possibly resulting in the remote execution of arbitrary code |
| 50 |
with the privileges of the user running the server, or a Denial of |
| 51 |
Service. NOTE: By default, nginx runs as the "nginx" user. |
| 52 |
|
| 53 |
Workaround |
| 54 |
========== |
| 55 |
|
| 56 |
There is no known workaround at this time. |
| 57 |
|
| 58 |
Resolution |
| 59 |
========== |
| 60 |
|
| 61 |
All nginx 0.5.x users should upgrade to the latest version: |
| 62 |
|
| 63 |
# emerge --sync |
| 64 |
# emerge --ask --oneshot --verbose =www-servers/nginx-0.5.38 |
| 65 |
|
| 66 |
All nginx 0.6.x users should upgrade to the latest version: |
| 67 |
|
| 68 |
# emerge --sync |
| 69 |
# emerge --ask --oneshot --verbose =www-servers/nginx-0.6.39 |
| 70 |
|
| 71 |
All nginx 0.7.x users should upgrade to the latest version: |
| 72 |
|
| 73 |
# emerge --sync |
| 74 |
# emerge --ask --oneshot --verbose =www-servers/nginx-0.7.62 |
| 75 |
|
| 76 |
References |
| 77 |
========== |
| 78 |
|
| 79 |
[ 1 ] CVE-2009-2629 |
| 80 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2629 |
| 81 |
|
| 82 |
Availability |
| 83 |
============ |
| 84 |
|
| 85 |
This GLSA and any updates to it are available for viewing at |
| 86 |
the Gentoo Security Website: |
| 87 |
|
| 88 |
http://security.gentoo.org/glsa/glsa-200909-18.xml |
| 89 |
|
| 90 |
Concerns? |
| 91 |
========= |
| 92 |
|
| 93 |
Security is a primary focus of Gentoo Linux and ensuring the |
| 94 |
confidentiality and security of our users machines is of utmost |
| 95 |
importance to us. Any security concerns should be addressed to |
| 96 |
security@g.o or alternatively, you may file a bug at |
| 97 |
https://bugs.gentoo.org. |
| 98 |
|
| 99 |
License |
| 100 |
======= |
| 101 |
|
| 102 |
Copyright 2009 Gentoo Foundation, Inc; referenced text |
| 103 |
belongs to its owner(s). |
| 104 |
|
| 105 |
The contents of this document are licensed under the |
| 106 |
Creative Commons - Attribution / Share Alike license. |
| 107 |
|
| 108 |
http://creativecommons.org/licenses/by-sa/2.5 |
Archives