Bug 1327484 (CVE-2016-3707) - CVE-2016-3707 kernel-rt: Sending SysRq command via ICMP echo request
Summary: CVE-2016-3707 kernel-rt: Sending SysRq command via ICMP echo request
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-3707
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: 1331240 1331241 1331242
Blocks: 1327486
TreeView+ depends on / blocked
 
Reported: 2016-04-15 08:35 UTC by Adam Mariš
Modified: 2021-02-17 04:02 UTC (History)
26 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2016-06-24 11:02:00 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:1301 0 normal SHIPPED_LIVE Important: kernel-rt security, bug fix, and enhancement update 2016-06-23 20:15:04 UTC
Red Hat Product Errata RHSA-2016:1341 0 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2016-06-27 14:02:50 UTC

Description Adam Mariš 2016-04-15 08:35:13 UTC 
A flaw was found in the kernel-rt in which an attacker could submit a specially crafted ICMP echo request which can trigger a sysrq function based on values in the ICMP packet.

This feature was introduced in the kernel-rt only and is not shipping with standard Red Hat Enterprise Linux kernels.

Remote attacker could exploit this feature using bruteforce to submit arbitrary SysRq commands.

Resources:
https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patch-4.4.7-rt16.patch.gz

Upstream discussion:
https://lwn.net/Articles/448790/

CVE request:
http://seclists.org/oss-sec/2016/q2/349
Comment 3 Wade Mealing 2016-04-29 13:16:30 UTC 
Statement:

This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5, 6 and 7.

This issue affects the Linux kernel-rt packages as shipped with Red Hat Enterprise Linux 7 and MRG-2  and may be addressed in a future update.
Comment 6 errata-xmlrpc 2016-06-23 16:30:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:1301 https://access.redhat.com/errata/RHSA-2016:1301
Comment 7 errata-xmlrpc 2016-06-27 10:03:53 UTC 
This issue has been addressed in the following products:

  MRG for RHEL-6 v.2

Via RHSA-2016:1341 https://access.redhat.com/errata/RHSA-2016:1341
Note You need to log in before you can comment on or make changes to this bug.