Bug 1403833 - (CVE-2016-8399) CVE-2016-8399 kernel: net: Out of bounds stack read in memcpy_fromiovec
CVE-2016-8399 kernel: net: Out of bounds stack read in memcpy_fromiovec
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20161205,repor...
: Security
Depends On: 1430604 1430605 1403834 1414202 1414203 1414204 1417247 1481573 1481574 1481575 1481576 1481577 1481578
Blocks: 1403838
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Reported: 2016-12-12 08:00 EST by Adam Mariš
Modified: 2018-07-19 02:23 EDT (History)
38 users (show)

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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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RHEL 7.3 requirements from Atomic Host:
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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 09:06:51 EDT
Red Hat Product Errata RHSA-2017:0869 normal SHIPPED_LIVE Moderate: kernel security and enhancement update 2017-04-04 11:49:20 EDT
Red Hat Product Errata RHSA-2017:2930 normal SHIPPED_LIVE Important: kernel security and bug fix update 2017-10-19 14:47:35 EDT
Red Hat Product Errata RHSA-2017:2931 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2017-10-19 14:48:35 EDT

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Description Adam Mariš 2016-12-12 08:00:55 EST
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 08:02:26 EST
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1403834]
Comment 3 Wade Mealing 2017-01-17 22:47:06 EST
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 09:46:26 EDT
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 07:49:39 EDT
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 11:05:06 EDT
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 11:08:49 EDT
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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