[security-announce] Security Update: dropbear: CVE-2016-3116

Sona Sarmadi sona.sarmadi at enea.com
Fri Oct 21 14:43:30 CEST 2016


		Enea Linux Security Advisory

====================================================================
Product/package: Enea Linux 6.0: (dropbear 2016.72)
Severity: Medium
Architecture: All
CVE Name: CVE-2016-3116
====================================================================

This security update fixes a vulnerability in the way dropbear processed
X11 forwarding input. By using a specially crafted request, an attacker
could bypass the authorized_keys command restrictions.

Description
===========
CRLF injection vulnerability in Dropbear SSH before 2016.72 allows
remote authenticated users to bypass intended shell-command restrictions
via crafted X11 forwarding data.

References:
===========
https://matt.ucc.asn.au/dropbear/CHANGES
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3116

Correction for Enea Linux
=========================
http://git.enea.com/cgit/linux/poky.git/patch/?id=58538b070384f7ff0a31bba3877ca09b1c790bc4


How to get the latest patches
=============================
- If you have already cloned needed repositories, update it to get new
security patches.

cd Enea-Linux-6.0
$ repo sync

- If you have not yet cloned needed repositories, do it as described
below. (Security patches are fetched implicitly when cloning the repos).

Use repo tool to download the source for the Enea Linux 6.0 standard,
follow the steps below:
1. Make sure that the repo tool is installed. If not, follow the
instructions below:

$ curl https://storage.googleapis.com/git-repo-downloads/repo >
~/bin/repo
$ chmod a+x ~/bin/repo

The instruction assumes that ~/bin exists and is included in the PATH
variable.

2.Use the repo tool to download the source:
$ mkdir Enea-Linux-6.0
$ cd Enea-Linux-6.0
$ repo init \
-u git://git.enea.com/linux/el_manifests-standard.git \
-b krogoth\
-m <manifest file>
$ repo sync

The parameter <manifest file> depends on the target:
P2041RDB: p2041rdb/default.xml
LS1021a-IoT: ls1021aiot/default.xml
QEMUARM: qemuarm/default.xml
QEMUPCC: qemuppc/default.xml
QEMUX86: qemux86/default.xml

If you have any questions regarding the security patches and security
updates please contact security at enea.com.

For gerneral security refer to Enea Linux Security page:
http://www.enea.com/solutions/Enea-Linux/Security/

For the CVEs fixed at Enea Linux releases see CVE list:
http://www.enea.com/solutions/Enea-Linux/Security/CVEs-list/

For custom packages/releases please use the Support Channel:
http://www.enea.com/solutions/support.

Enea Security Team
Sona Sarmadi
Mobile: +46 70 971 4475
www.enea.com

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