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CVE-2013-0198

Status Candidate

Overview

Dnsmasq before 2.66test2, when used with certain libvirt configurations, replies to queries from prohibited interfaces, which allows remote attackers to cause a denial of service (traffic amplification) via spoofed TCP based DNS queries. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3411.

Related Files

Gentoo Linux Security Advisory 201406-24
Posted Jun 25, 2014
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201406-24 - A vulnerability in Dnsmasq can lead to a Denial of Service condition. Versions less than 2.66 are affected.

tags | advisory, denial of service
systems | linux, gentoo
advisories | CVE-2012-3411, CVE-2013-0198
SHA-256 | 03fe3ef285b1b5d1ff8c208a973714bdf9c38116c4b573b22286d305c570965b
Mandriva Linux Security Advisory 2013-072
Posted Apr 8, 2013
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2013-072 - When dnsmasq before 2.63 is used in conjunctions with certain configurations of libvirtd, network packets from prohibited networks may be sent to the dnsmasq application and processed. This can result in DNS amplification attacks for example. This update adds a new option --bind-dynamic which is immune to this problem. This update completes the fix for provided with dnsmasq-2.63. It was found that after the upstream patch for - replied to remote TCP-protocol based DNS queries (UDP protocol ones were corrected, but TCP ones not) from prohibited networks, when the --bind-dynamic option was used, - when --except-interface lo option was used dnsmasq didn't answer local or remote UDP DNS queries, but still allowed TCP protocol based DNS queries, - when --except-interface lo option was not used local / remote TCP DNS queries were also still answered by dnsmasq. This update fix these three cases.

tags | advisory, remote, local, udp, tcp, protocol
systems | linux, mandriva
advisories | CVE-2012-3411, CVE-2013-0198
SHA-256 | 1cd386bf36da7fa53caf08c4160adba6ddda2710da43dfc47169182527b1d65f
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