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
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2014-3675
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1148239 1148240 1152388
Blocks: 1148235
TreeView+ depends on / blocked
 
Reported: 2014-10-01 02:39 UTC by Murray McAllister
Modified: 2023-05-12 05:33 UTC (History)
7 users (show)

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.
Clone Of:
Environment:
Last Closed: 2014-11-04 18:50:10 UTC
Embargoed:

Attachments (Terms of Use)
proposed patch (3.95 KB, patch)
2014-10-01 02:57 UTC, Murray McAllister 		no flags Details | Diff
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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2014:1801 0 normal SHIPPED_LIVE Moderate: shim security update 2014-11-04 22:56:40 UTC

Description Murray McAllister 2014-10-01 02:39:31 UTC 
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 2014-10-01 02:57:15 UTC 
Created attachment 942902 [details]
proposed patch
Comment 5 Murray McAllister 2014-10-14 03:59:32 UTC 
Public now:

http://seclists.org/oss-sec/2014/q4/311
Comment 6 Murray McAllister 2014-10-14 04:02:33 UTC 
Created shim tracking bugs for this issue:

Affects: fedora-all [bug 1152388]
Comment 8 Fedora Update System 2014-11-01 17:07:36 UTC 
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 10:25:52 UTC 
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 17:56:50 UTC 
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 2014-11-12 02:36:02 UTC 
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 2014-11-12 02:40:58 UTC 
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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