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Gentoo: GLSA-201207-07 Normal: Keepalived Denial of Service Mitigation

gentoo
Calendar Grey July 9, 2012
Dist Gentoo Esm H88
The advisory GENTOO 202312-12 regarding Keepalived highlights a risk of local Denial of Service caused by improper handling of PID files. Update immediately!
Keepalived uses world-writable PID files, allowing a local attacker to kill arbitrary processes.

Summary

The "pidfile_write()" function in pidfile.c in Keepalived writes PID files with insecure permissions.

Topics%20covered

Topics Covered

security advisory denial of service update gentoo keepalived

Resolution

All Keepalived users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot -v ">=sys-cluster/keepalived-1.2.2-r3"

References

[ 1 ] CVE-2011-1784 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1784

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201207-07
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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: Keepalived: Denial of Service
Date: July 09, 2012
Bugs: #371469
ID: 201207-07

Topics%20covered

Topics Covered

security advisory denial of service update gentoo keepalived

Synopsis

Keepalived uses world-writable PID files, allowing a local attacker to kill arbitrary processes.

Background

Keepalived is a strong & robust keepalive facility to the Linux Virtual Server project.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-cluster/keepalived < 1.2.2-r3 >= 1.2.2-r3

Impact

===== A local attacker may be able to cause a Denial of Service of arbitrary processes.

Workaround

There is no known workaround at this time.

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