CVE-2006-4251

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-11-14 · updated 2026-06-16

Description

Buffer overflow in PowerDNS Recursor 3.1.3 and earlier might allow remote attackers to execute arbitrary code via a malformed TCP DNS query that prevents Recursor from properly calculating the TCP DNS query length.

Affected products

PowerDNS Recursor: through 3.1.3; 2.0_rc1, 2.8, 2.9.15, 2.9.16, 2.9.17, 2.9.18 (+5)

References

http://doc.powerdns.com/powerdns-advisory-2006-01.html
http://lists.suse.com/archive/suse-security-announce/2006-Nov/0007.html
http://secunia.com/advisories/22824
http://secunia.com/advisories/22903
http://secunia.com/advisories/22976
http://www.debian.org/security/2006/dsa-1211
http://www.securityfocus.com/bid/21037
http://www.vupen.com/english/advisories/2006/4484
https://exchange.xforce.ibmcloud.com/vulnerabilities/30270
http://doc.powerdns.com/powerdns-advisory-2006-01.html
http://lists.suse.com/archive/suse-security-announce/2006-Nov/0007.html
http://secunia.com/advisories/22824

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