Gentoo: GLSA 201607-08 Normal: Dropbear Privilege Escalation Risk
gentoo
July 20, 2016
A vulnerability has been found in Dropbear, which allows remote authenticated users to bypass intended shell-command restrictions.
Summary
A CRLF injection vulnerability in Dropbear SSH allows remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data.
Resolution
All Dropbear users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/dropbear-2016.73"
References
[ 1 ] CVE-2016-3116 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-3116
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201607-08
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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.
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Severity: Normal
Title: Dropbear: Privilege escalation
Date: July 20, 2016
Bugs: #577050
ID: 201607-08
Background
Dropbear is a relatively small SSH server and client.
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Affected Packages
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Package / Vulnerable / Unaffected
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1 net-misc/dropbear < 2016.73 >= 2016.73
Impact
=====
A remote authenticated user could execute arbitrary code with the
privileges of the process.
Workaround
There is no known workaround at this time.
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