Bug 960605 (CVE-2013-2028)

Summary:	CVE-2013-2028 nginx: Stack-based buffer overflow when handling certain chunked transfer encoding requests
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	affix, jeremy, pavel.lisy, relrod
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nginx-1.5.0, nginx-1.4.1	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-05-30 06:58:08 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	960606
Bug Blocks:

Description Jan Lieskovsky 2013-05-07 13:31:18 UTC

A stack-based buffer overflow flaw was found in the way Nginx, a high performance web server and reverse proxy server for HTTP, SMTP, POP3, and IMAP protocols, performed processing of certain chunked transfer encoding HTTP requests. A remote attacker could provide a HTTP request with specially-crafted size or length values of the chunked packet that, when processed would lead to nginx daemon / service crash.

References:
[1] http://www.openwall.com/lists/oss-security/2013/05/07/3

Relevant upstream patch:
[2] http://nginx.org/download/patch.2013.chunked.txt

Comment 1 Jan Lieskovsky 2013-05-07 13:33:45 UTC

This issue did NOT affect the versions of the nginx package, as shipped with Fedora release of 17, 18, Fedora EPEL-5, and Fedora EPEL-6 (as they did not contain support for HTTP chunked transfer encoding yet).

Comment 2 Jan Lieskovsky 2013-05-07 13:34:19 UTC

Created nginx tracking bugs for this issue

Affects: fedora-rawhide [bug 960606]