Bug 842424 (CVE-2012-3570)

Summary:	CVE-2012-3570 dhcp: DoS in DHCPv6 due to error in handling malformed client identifiers
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jpopelka, security-response-team
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:	2019-06-10 10:58:48 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:	842892
Bug Blocks:	842431

Description Vincent Danen 2012-07-23 20:25:54 UTC

An unexpected client identifier parameter can cause the ISC DHCP daemon to
segmentation fault when running in DHCPv6 mode, resulting in a denial of
service to further client requests. In order to exploit this condition, an
attacker must be able to send requests to the DHCP server.

ISC DHCP versions 4.2.x are vulnerable to this flaw; earlier versions are not affected.

Acknowledgements:

Upstream acknowledges Markus Hietava of Codenomicon CROSS project as the original reporter of this issue.

Comment 2 Vincent Danen 2012-07-23 20:33:15 UTC

Statement:

Not vulnerable. This issue did not affect the versions of dhcp as shipped with Red Hat Enterprise Linux 5 and 6.

Comment 3 Vincent Danen 2012-07-24 20:35:01 UTC

This is now public:

https://kb.isc.org/article/AA-00714

Comment 4 Vincent Danen 2012-07-24 20:37:26 UTC

Created dhcp tracking bugs for this issue

Affects: fedora-all [bug 842892]

Comment 5 Fedora Update System 2012-08-01 18:28:05 UTC

dhcp-4.2.4-9.P1.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2012-08-06 07:50:28 UTC

dhcp-4.2.3-11.P2.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.