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Gentoo: GLSA-201706-02 Critical: Shadow Escalation Vulnerability Alert

gentoo
Calendar Grey June 6, 2017
Dist Gentoo Esm H88
Several flaws identified in Shadow may permit unauthorized privilege elevation. All Gentoo users are advised to apply updates.
Multiple vulnerabilities have been found in Shadow, the worst of which might allow privilege escalation.

Summary

Multiple vulnerabilities have been discovered in Shadow. Please review the CVE identifiers referenced below for details.

Topics%20covered

Topics Covered

security advisory denial of service high severity gentoo privilege escalation shadow

Resolution

All Shadow users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/shadow-4.4-r2"

References

[ 1 ] CVE-2016-6252 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6252 [ 2 ] CVE-2017-2616 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-2616

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201706-02
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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
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Severity: High
Title: Shadow: Multiple vulnerabilities
Date: June 06, 2017
Bugs: #610804, #620510
ID: 201706-02

Topics%20covered

Topics Covered

security advisory denial of service high severity gentoo privilege escalation shadow

Synopsis

Multiple vulnerabilities have been found in Shadow, the worst of which might allow privilege escalation.

Background

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

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-apps/shadow < 4.4-r2 >= 4.4-r2

Impact

===== A local attacker could possibly cause a Denial of Service condition, gain privileges via crafted input, or SIGKILL arbitrary processes.

Workaround

There is no known workaround at this time.

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