GLSA 201607-08: Dropbear: Privilege escalation

http://security.gentoo.org/

Severity:	normal
Title:	Dropbear: Privilege escalation
Date:	07/20/2016
Bugs:	#577050
ID:	201607-08

Synopsis

A vulnerability has been found in Dropbear, which allows remote authenticated users to bypass intended shell-command restrictions.

Background

Dropbear is a relatively small SSH server and client.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/dropbear	< 2016.73	>= 2016.73	All supported architectures

Description

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

Impact

A remote authenticated user could execute arbitrary code with the privileges of the process.

Workaround

There is no known workaround at this time.

Resolution

All Dropbear users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-misc/dropbear-2016.73"

References

CVE-2016-3116

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201607-08.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.