Bug 1403833 (CVE-2016-8399) - CVE-2016-8399 kernel: net: Out of bounds stack read in memcpy_fromiovec
Summary: CVE-2016-8399 kernel: net: Out of bounds stack read in memcpy_fromiovec
Status: NEW
Alias: CVE-2016-8399
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
(Show other bugs)
Version: unspecified
Hardware: All Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20161205,repor...
Keywords: Security
Depends On: 1430605 1403834 1414202 1414203 1414204 1417247 1430604 1481573 1481574 1481575 1481576 1481577 1481578
Blocks: 1403838
TreeView+ depends on / blocked
 
Reported: 2016-12-12 13:00 UTC by Adam Mariš
Modified: 2018-08-28 22:11 UTC (History)
37 users (show)

Fixed In Version:
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Doc Text:
A flaw was found in the Linux networking subsystem where a local attacker with CAP_NET_ADMIN capabilities could cause an out-of-bounds memory access by creating a smaller-than-expected ICMP header and sending to its destination via sendto().
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Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:0817 normal SHIPPED_LIVE Moderate: kernel security, bug fix, and enhancement update 2017-03-21 13:06:51 UTC
Red Hat Product Errata RHSA-2017:0869 normal SHIPPED_LIVE Moderate: kernel security and enhancement update 2017-04-04 15:49:20 UTC
Red Hat Product Errata RHSA-2017:2930 normal SHIPPED_LIVE Important: kernel security and bug fix update 2017-10-19 18:47:35 UTC
Red Hat Product Errata RHSA-2017:2931 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2017-10-19 18:48:35 UTC

Description Adam Mariš 2016-12-12 13:00:55 UTC
A flaw was found in the Linux networking subsystem where a local attacker with CAP_NET_ADMIN capbilities could cause an out of bounds read by creating a smaller-than-expected ICMP header and sending to its destination via sendto().

Due to lack of size checking on ICMP header length, it is possible to cause out-of-bounds read on stack, this stack data may be included in the outgoing packet data if it can be validated (infoleak).

Upstream patch:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0eab121ef8750a5c8637d51534d5e9143fb0633f

Comment 1 Adam Mariš 2016-12-12 13:02:26 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1403834]

Comment 3 Wade Mealing 2017-01-18 03:47:06 UTC
Statement:

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6 and is planned to be addressed in future updates.

For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

This issue doesn't affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 7 and MRG-2.

Comment 10 errata-xmlrpc 2017-03-21 13:46:26 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2017:0817 https://rhn.redhat.com/errata/RHSA-2017-0817.html

Comment 12 errata-xmlrpc 2017-04-04 11:49:39 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.7 Extended Update Support

Via RHSA-2017:0869 https://access.redhat.com/errata/RHSA-2017:0869

Comment 16 errata-xmlrpc 2017-10-19 15:05:06 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:2930 https://access.redhat.com/errata/RHSA-2017:2930

Comment 17 errata-xmlrpc 2017-10-19 15:08:49 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:2931 https://access.redhat.com/errata/RHSA-2017:2931


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