Input validation error in Dnsmasq - CVE-2008-3214
Published: July 18, 2008 / Updated: June 8, 2025
Vulnerability identifier: #VU110636
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2008-3214
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
dnsmasq 2.25 allows remote attackers to cause a denial of service (daemon crash) by (1) renewing a nonexistent lease or (2) sending a DHCPREQUEST for an IP address that is not in the same network, related to the DHCP NAK response from the daemon.
Affected software
Dnsmasq
How to mitigate CVE-2008-3214
Install update from vendor's website.
Dnsmasq - update to 2.26
External References
- http://freshmeat.net/projects/dnsmasq/?branch_id=1991&release_id=217681
- http://www.openwall.com/lists/oss-security/2008/06/30/7
- http://www.openwall.com/lists/oss-security/2008/07/01/8
- http://www.openwall.com/lists/oss-security/2008/07/02/4
- http://www.openwall.com/lists/oss-security/2008/07/03/4
- http://www.openwall.com/lists/oss-security/2008/07/08/8
- http://www.openwall.com/lists/oss-security/2008/07/12/3
- http://www.thekelleys.org.uk/dnsmasq/CHANGELOG
- https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/47438
- https://exchange.xforce.ibmcloud.com/vulnerabilities/43929