Bug 858994 (CVE-2012-4434)

Summary:	CVE-2012-4434 fwknop: Multiple denial of service / code execution flaws fixed in 2.0.3 version
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:	mitr, pvrabec
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	fwknop 2.0.3	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-19 21:57:16 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:	859006, 859007
Bug Blocks:

Description Jan Lieskovsky 2012-09-20 10:23:48 UTC

Multiple denial of service, possibly leading to arbitrary code execution flaws were corrected in upstream 2.0.3 version of fwknop (from upstream Changelog at [1]):

1) [server] Fernando Arnaboldi from IOActive found several DoS/code execution vulnerabilities for malicious fwknop clients that manage to get past the authentication stage (so a such a client must be in possession of a valid access.conf encryption key). These vulnerabilities manifested themselves in the handling of malformed access requests, and both the fwknopd server code along with libfko now perform stronger input validation of access request data. These vulnerabilities affect pre-2.0.3 fwknop releases.

References:
[1] http://www.cipherdyne.org/blog/categories/software-releases.html
[2] http://secunia.com/advisories/50522/
[3] http://www.openwall.com/lists/oss-security/2012/09/20/4

Relevant upstream patch:
[4] http://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git;a=commitdiff;h=d46ba1c027a11e45821ba897a4928819bccc8f22

Comment 1 Jan Lieskovsky 2012-09-20 10:25:32 UTC

This issue affects the versions of the fwknop package, as shipped with Rawhide and Fedora release of 17. Please schedule an update.

--

This issue did NOT affect the version of the fwknop package, as shipped with Fedora release of 16 (as it is Perl language based implementation yet).

Comment 2 Jan Lieskovsky 2012-09-20 10:56:29 UTC

Created fwknop tracking bugs for this issue

Affects: fedora-rawhide [bug 859006]
Affects: fedora-17 [bug 859007]