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Gentoo: GLSA-201401-05 Normal: Rssh Access Control Bypass Risk

gentoo
Calendar Grey November 28, 2013
Dist Gentoo Esm H88
Various security flaws in the rssh package on Gentoo discovered, necessitating an urgent upgrade to ensure protection.
Multiple vulnerabilities have been found in rssh, allowing local attackers to bypass access restrictions.

Summary

Multiple command line parsing and validation vulnerabilities have been discovered in rssh. Please review the CVE identifiers referenced below for details.

Topics%20covered

Topics Covered

security advisory gentoo local attack rssh bypass normal severity access restriction

Resolution

All rssh users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/rssh-2.3.4"

References

[ 1 ] CVE-2012-2252 http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-2252 [ 2 ] CVE-2012-3478 http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-3478

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201311-19
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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.

Severity: Normal
Title: rssh: Access restriction bypass
Date: November 28, 2013
Bugs: #415255, #445166
ID: 201311-19

Topics%20covered

Topics Covered

security advisory gentoo local attack rssh bypass normal severity access restriction

Synopsis

Multiple vulnerabilities have been found in rssh, allowing local attackers to bypass access restrictions.

Background

rssh is a restricted shell, allowing only a few commands like scp or sftp. It is often used as a complement to OpenSSH to provide limited access to users.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-shells/rssh < 2.3.4 >= 2.3.4

Impact

===== Multiple parsing and validation vulnerabilities can cause the restrictions set up by rssh to be bypassed.

Workaround

There is no known workaround at this time.

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