Input validation error in Dnsmasq - CVE-2012-3411
Published: June 8, 2025
Vulnerability identifier: #VU110635
CSH Severity: Medium
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L]
CVE-ID: CVE-2012-3411
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application replies to requests from prohibited interfaces. A remote attacker can cause a denial of service (traffic amplification) via a spoofed DNS query.
Affected software
Dnsmasq
Gentoo Linux
net-dns/dnsmasq
Gentoo Linux
net-dns/dnsmasq
How to mitigate CVE-2012-3411
Install updates from vendor's website.
Dnsmasq - update to 2.63
net-dns/dnsmasq - update to 2.66
net-dns/dnsmasq - update to 2.66
External References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=683372
- http://rhn.redhat.com/errata/RHSA-2013-0277.html
- http://www.openwall.com/lists/oss-security/2012/07/12/5
- https://bugzilla.redhat.com/show_bug.cgi?id=833033
- http://rhn.redhat.com/errata/RHSA-2013-0276.html
- http://www.thekelleys.org.uk/dnsmasq/CHANGELOG
- http://rhn.redhat.com/errata/RHSA-2013-0579.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:072
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commitdiff%3Bh=2f38141f434e23292f84cefc33e8de76fb856147
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commitdiff%3Bh=54dd393f3938fc0c19088fbd319b95e37d81a2b0
- https://security.libvirt.org/2012/0001.html