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Unbound: Denial of Service


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201311-18 / unbound
Release Date November 28, 2013
Latest Revision November 28, 2013: 1
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-dns/unbound < 1.4.13_p2 >= 1.4.13_p2 All supported architectures

Related bugreports: #395287


Multiple Denial of Service vulnerabilities have been found in Unbound.

2.  Impact Information


Unbound is a validating, recursive, and caching DNS resolver.


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


A remote attacker could possibly cause a Denial of Service condition via a specially crafted response.

3.  Resolution Information


There is no known workaround at this time.


All Unbound users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-dns/unbound-1.4.13_p2"

4.  References


Page updated November 28, 2013

Summary: This is a Gentoo Linux Security Advisory

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