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Gentoo: GLSA-201209-04 Moderate: BIND Denial of Service Risk

gentoo
Calendar Grey September 24, 2012
Dist Gentoo Esm H88
Several flaws discovered in BIND may lead to Denial of Service issues; Gentoo users are advised to apply updates promptly.
Multiple vulnerabilities have been found in BIND, the worst of which may allow remote Denial of Service.

Summary

Multiple vulnerabilities have been discovered in BIND: * Domain names are not properly revoked due to an error in the cache update policy (CVE-2012-1033). * BIND accepts records with zero-length RDATA fields (CVE-2012-1667). * An assertion failure from the failing-query cache could occur when DNSSEC validation is enabled (CVE-2012-3817). * A memory leak may occur under high TCP query loads (CVE-2012-3868). * An assertion error can occur when a query is performed for a record with RDATA greater than 65535 bytes (CVE-2012-4244).

Topics%20covered

Topics Covered

security advisory denial of service gentoo software update bind vulnerability

Resolution

All BIND users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/bind-9.9.1_p3"

References

[ 1 ] CVE-2012-1033 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1033 [ 2 ] CVE-2012-1667 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1667 [ 3 ] CVE-2012-3817 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3817 [ 4 ] CVE-2012-3868 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3868 [ 5 ] CVE-2012-4244 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4244

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201209-04
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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: Normal
Title: BIND: Multiple vulnerabilities
Date: September 24, 2012
Bugs: #402661, #419637, #427966, #434876
ID: 201209-04

Topics%20covered

Topics Covered

security advisory denial of service gentoo software update bind vulnerability

Synopsis

Multiple vulnerabilities have been found in BIND, the worst of which may allow remote Denial of Service.

Background

BIND is the Berkeley Internet Name Domain Server.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dns/bind < 9.9.1_p3 >= 9.9.1_p3

Impact

===== A remote attacker may be able to cause a Denial of Service condition or keep domain names resolvable after it has been deleted from registration.

Workaround

There is no known workaround at this time.

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