Bug 1148230 – CVE-2014-3675 shim: out-of-bounds memory read flaw in DHCPv6 packet processing

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Bug 1148230 - (CVE-2014-3675) CVE-2014-3675 shim: out-of-bounds memory read flaw in DHCPv6 packet processing

Summary:	CVE-2014-3675 shim: out-of-bounds memory read flaw in DHCPv6 packet processing

Status:	CLOSED ERRATA

Aliases:	CVE-2014-3675

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20141013,reported=2...
Keywords:	Security

Depends On:	1148239 1148240 1152388
Blocks:	1148235
	Show dependency tree / graph

Reported:	2014-09-30 22:39 EDT by Murray McAllister
Modified:	2015-11-25 05:12 EST (History)
CC List:	7 users (show)

See Also:
Fixed In Version:	shim-0.7-8.el7
Doc Type:	Bug Fix
Doc Text:	An out-of-bounds memory read flaw was found in the way shim parsed certain IPv6 packets. A specially crafted DHCPv6 packet could possibly cause shim to crash, preventing the system from booting if IPv6 booting was enabled.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2014-11-04 13:50:10 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
proposed patch (3.95 KB, patch) 2014-09-30 22:57 EDT, Murray McAllister	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2014:1801	normal	SHIPPED_LIVE	Moderate: shim security update	2014-11-04 17:56:40 EST

Groups: None (edit)

Description Murray McAllister 2014-09-30 22:39:31 EDT

An out-of-bounds memory read flaw was found in shim when IPv6 network booting was enabled. A specially-crafted DHCPv6 packet could possibly cause shim to crash, preventing the system from booting.

Note that performing a secure boot over the network is not a common scenario.

Acknowledgements:

Red Hat would like to thank the SUSE Security Team for reporting this issue.

Comment 2 Murray McAllister 2014-09-30 22:57:15 EDT

Created attachment 942902 [details]
proposed patch

Comment 5 Murray McAllister 2014-10-13 23:59:32 EDT

Public now:

http://seclists.org/oss-sec/2014/q4/311

Comment 6 Murray McAllister 2014-10-14 00:02:33 EDT

Created shim tracking bugs for this issue:

Affects: fedora-all [bug 1152388]

Comment 8 Fedora Update System 2014-11-01 13:07:36 EDT

shim-0.8-1.fc22, shim-signed-0.8-1.fc22, mokutil-0.2.0-1.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 Martin Prpič 2014-11-04 05:25:52 EST

IssueDescription:

An out-of-bounds memory read flaw was found in the way shim parsed certain IPv6 packets. A specially crafted DHCPv6 packet could possibly cause shim to crash, preventing the system from booting if IPv6 booting was enabled.

Comment 10 errata-xmlrpc 2014-11-04 12:56:50 EST

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2014:1801 https://rhn.redhat.com/errata/RHSA-2014-1801.html

Comment 11 Fedora Update System 2014-11-11 21:36:02 EST

mokutil-0.2.0-1.fc19, shim-signed-0.8-2 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 12 Fedora Update System 2014-11-11 21:40:58 EST

mokutil-0.2.0-1.fc20, shim-signed-0.8-3 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

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