Bug 1148231 (CVE-2014-3676) - CVE-2014-3676 shim: heap-based buffer overflow flaw in IPv6 address parsing
Summary: CVE-2014-3676 shim: heap-based buffer overflow flaw in IPv6 address parsing
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2014-3676
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
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 02:44 UTC by Murray McAllister
Modified: 2023-05-12 05:39 UTC (History)
7 users (show)

Fixed In Version: shim-0.7-8.el7
Doc Type: Bug Fix
Doc Text:
A heap-based buffer overflow flaw was found the way shim parsed certain IPv6 addresses. If IPv6 network booting was enabled, a malicious server could supply a crafted IPv6 address that would cause shim to crash or, potentially, execute arbitrary code.
Clone Of:
Environment:
Last Closed: 2014-11-04 18:50:20 UTC
Embargoed:

Attachments (Terms of Use)


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 02:44:16 UTC 
A heap-based buffer overflow flaw was found in shim when parsing IPv6 addresses. If IPv6 network booting were enabled, a malicious server could supply a crafted IPv6 address that would cause shim to crash or, potentially, execute arbitrary code.

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 02:57:38 UTC 
The proposed patch for this issue is the same as in https://bugzilla.redhat.com/show_bug.cgi?id=1148230#c2
Comment 6 Murray McAllister 2014-10-14 03:59:42 UTC 
Public now:

http://seclists.org/oss-sec/2014/q4/311
Comment 7 Murray McAllister 2014-10-14 04:02:45 UTC 
Created shim tracking bugs for this issue:

Affects: fedora-all [bug 1152388]
Comment 9 Fedora Update System 2014-11-01 17:07:38 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 10 Martin Prpič 2014-11-04 10:25:06 UTC 
IssueDescription:

A heap-based buffer overflow flaw was found the way shim parsed certain IPv6 addresses. If IPv6 network booting was enabled, a malicious server could supply a crafted IPv6 address that would cause shim to crash or, potentially, execute arbitrary code.
Comment 11 errata-xmlrpc 2014-11-04 17:56:52 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 12 Fedora Update System 2014-11-12 02:36:04 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 13 Fedora Update System 2014-11-12 02:41:00 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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