GLSA 201710-16: Shadow: Buffer overflow

http://security.gentoo.org/

Severity:	normal
Title:	Shadow: Buffer overflow
Date:	10/15/2017
Bugs:	#627044
ID:	201710-16

Synopsis

A vulnerability found in Shadow may allow remote attackers to cause a Denial of Service condition or produce other unspecified behaviors.

Background

Shadow is a set of tools to deal with user accounts.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-apps/shadow	< 4.5	>= 4.5	All supported architectures

Description

Malformed input in the newusers tool may produce crashes and other unspecified behaviors.

Impact

A remote attacker could possibly cause a Denial of Service condition or bypass privilege boundaries in some web-hosting environments in which a Control Panel allows an unprivileged user account to create subaccounts.

Workaround

There is no known workaround at this time.

Resolution

All Shadow users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-apps/shadow-4.5"

References

CVE-2017-12424

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201710-16.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.