Bug 1403833 (CVE-2016-8399)

Summary:	CVE-2016-8399 kernel: net: Out of bounds stack read in memcpy_fromiovec
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aquini, arm-mgr, bhu, dhoward, fhrbata, gansalmon, gmollett, hwkernel-mgr, iboverma, ichavero, itamar, jforbes, jkacur, joelsmith, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, madhu.chinakonda, matt, mchehab, mcressma, nmurray, pdwyer, pholasek, plougher, pmatouse, rt-maint, rvrbovsk, security-response-team, williams, wmealing
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
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().	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:04:13 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1403834, 1414202, 1414203, 1414204, 1417247, 1430604, 1430605, 1481573, 1481574, 1481575, 1481576, 1481577, 1481578
Bug Blocks:	1403838

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