Overview
A vulnerability in the nginx web server may allow remote attackers to execute arbitrary code on an affected system.
Description
nginx is an HTTP server and mail proxy server that is available for a number of different platforms. A buffer underflow vulnerability exists in the ngx_http_parse_complex_uri() function when handling specially crafted URIs. Exploitation of this vulnerability would cause the nginx server to write data contained in the URI to heap memory before the allocated buffer. |
Impact
As with a number of other web servers, nginx is designed to operate with a single privileged master process and multiple unprivileged worker processes handling specific requests. A remote, unauthenticated attacker may be able to execute arbitrary code in the context of the worker process or cause the worker process to crash, resulting in a denial of service. |
Solution
Upgrade or apply a patch Updated versions of the nginx package have been released to address this issue. Users should consult the Systems Affected section of this document for information about specific vendors. |
Vendor Information
Debian GNU/Linux Affected
Notified: September 05, 2009 Updated: September 14, 2009
Statement Date: September 14, 2009
Status
Affected
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
Debian has published Debian Security Advisory DSA-1884 in response to this issue. Users are encouraged to review this advisory and apply the patches it describes.
Vendor References
Gentoo Linux Affected
Notified: September 05, 2009 Updated: September 21, 2009
Statement Date: September 18, 2009
Status
Affected
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The Gentoo Security Team has published Gentoo Linux Security Advisory GLSA 200909-18 in response to this issue. Users are encouraged to review this advisory and apply the patches it refers to.
Vendor References
nginx Affected
Updated: September 15, 2009
Statement Date: September 05, 2009
Status
Affected
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The author of nginx has published the following updated versions of the software to address this issue:
- Development version: nginx-0.8.15, nginx/Windows-0.8.15, change log
- Stable version: nginx-0.7.62, nginx/Windows-0.7.62, change log
- Legacy stable version: nginx-0.6.39, change log
- Legacy version: nginx-0.5.38, change log
SUSE Linux Not Affected
Notified: September 05, 2009 Updated: September 08, 2009
Statement Date: September 07, 2009
Status
Not Affected
Vendor Statement
as far as I can see we never shipped the nginx web-server.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Sun Microsystems, Inc. Not Affected
Notified: September 05, 2009 Updated: September 09, 2009
Statement Date: September 08, 2009
Status
Not Affected
Vendor Statement
Sun Products are not vulnerable, since nginx is not included in any supported Sun product offering. A vulnerable version of nginx is available as an unsupported component of WebStack project, which will be updated to fix this vulnerability.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
The SCO Group Not Affected
Notified: September 05, 2009 Updated: September 08, 2009
Statement Date: September 08, 2009
Status
Not Affected
Vendor Statement
SCO does not ship this web server with any of its products and we are therefore not affected by this vulnerability.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Apple Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Conectiva Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Cray Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
DragonFly BSD Project Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
EMC Corporation Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Engarde Secure Linux Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
F5 Networks, Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Fedora Project Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
FreeBSD, Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Fujitsu Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Hewlett-Packard Company Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Hitachi Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
IBM Corporation Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
IBM eServer Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Infoblox Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Juniper Networks, Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Mandriva S. A. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
MontaVista Software, Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
NEC Corporation Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
NetBSD Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Nokia Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Novell, Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
OpenBSD Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Openwall GNU/*/Linux Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
QNX Software Systems Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Red Hat, Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
SafeNet Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Silicon Graphics, Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Slackware Linux Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Sony Corporation Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Turbolinux Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Ubuntu Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Unisys Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
Wind River Systems, Inc. Unknown
Notified: September 05, 2009 Updated: September 06, 2009
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
We are not aware of further vendor information regarding this vulnerability.
CVSS Metrics
| Group | Score | Vector |
|---|---|---|
| Base | 0 | AV:--/AC:--/Au:--/C:--/I:--/A:-- |
| Temporal | 0 | E:ND/RL:ND/RC:ND |
| Environmental | 0 | CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND |
References
Acknowledgements
Thanks to Chris Ries of the Carnegie Mellon University Information Security Office for reporting this vulnerability.
This document was written by Chad R Dougherty.
Other Information
| CVE IDs: | CVE-2009-2629 |
| Severity Metric: | 4.22 |
| Date Public: | 2009-09-14 |
| Date First Published: | 2009-09-15 |
| Date Last Updated: | 2009-09-21 19:50 UTC |
| Document Revision: | 9 |