Bug 754757 (CVE-2011-4315)

Summary:	CVE-2011-4315 nginx: heap overflow in ngx_resolver_copy()
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	affix, jeremy
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-01-23 13:39:10 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:	754758, 754759
Bug Blocks:

Description Vincent Danen 2011-11-17 16:27:51 UTC

It was reported [1] that a heap overflow flaw in nginx's custom DNS resolver was corrected in upstream version 1.0.10 [2],[3].  This resolver is most commonly used with the proxy and fastcgi modules, which are not enabled by default.  As well, a malicious user would need to be in control of an upstream resolver host, or be able to brute-force the weakly-generated 16-bit transaction identifier, to exploit the flaw.

[1] http://seclists.org/oss-sec/2011/q4/323
[2] http://nginx.org/en/CHANGES-1.0
[3] http://trac.nginx.org/nginx/changeset/4268/nginx

Comment 1 Vincent Danen 2011-11-17 16:29:36 UTC

Created nginx tracking bugs for this issue

Affects: fedora-all [bug 754758]
Affects: epel-all [bug 754759]

Comment 2 Fedora Update System 2011-12-06 00:59:36 UTC

nginx-1.0.10-1.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 3 Fedora Update System 2011-12-06 01:03:28 UTC

nginx-1.0.10-1.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.