SB2008071801 - Input validation error in Dnsmasq
Published: July 18, 2008 Updated: June 8, 2025
Security Bulletin ID
SB2008071801
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2008-3214)
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.
Remediation
Install update from vendor's website.
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