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Gentoo: GLSA 202309-02 Critical: MUNGE Security Flaw Notification

gentoo
Calendar Grey June 6, 2017
Dist Gentoo Esm H88
MUNGE privilege escalation vulnerability poses a risk for Gentoo users. Update to safeguard against unauthorized intrusions and ensure system integrity.
Gentoo's MUNGE ebuilds are vulnerable to privilege escalation due to improper permissions.

Summary

It was discovered that Gentoo's default MUNGE installation suffered from a privilege escalation vulnerability (munge user to root) due to improper permissions and a runscript which called chown() on a user controlled file.

Topics%20covered

Topics Covered

security advisory high severity security issue gentoo privilege escalation munge

Resolution

All MUNGE users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=sys-auth/munge-0.5.10-r2"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201706-01
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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: High
Title: MUNGE: Privilege escalation
Date: June 06, 2017
Bugs: #602596
ID: 201706-01

Topics%20covered

Topics Covered

security advisory high severity security issue gentoo privilege escalation munge

Synopsis

Gentoo's MUNGE ebuilds are vulnerable to privilege escalation due to improper permissions.

Background

An authentication service for creating and validating credentials.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-auth/munge < 0.5.10-r2 >= 0.5.10-r2

Impact

===== A local attacker, who either is already MUNGE's system user or belongs to MUNGE's group, could potentially escalate privileges.

Workaround

There is no known workaround at this time.

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