Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | dnsmasq | 2.66-1 | — |
| Debian 13 | dnsmasq | 2.66-1 | — |
| Debian 12 | dnsmasq | 2.66-1 | — |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=894486
- MDVSA-2013:072 vendor-advisory
- http://www.thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commitdiff%3Bh=22ce550e5346947a12a781ed0959a7b1165d0dc6
- [oss-security] 20130118 Re: CVE Request -- dnsmasq: Incomplete fix for the CVE-2012-3411 issue mailing-list
- [oss-security] 20130118 CVE Request -- dnsmasq: Incomplete fix for the CVE-2012-3411 issue mailing-list