CVE-2009-3602

high

Description

Unbound before 1.3.4 does not properly verify signatures for NSEC3 records, which allows remote attackers to cause secure delegations to be downgraded via DNS spoofing or other DNS-related attacks in conjunction with crafted delegation responses.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/53729

http://www.vupen.com/english/advisories/2009/2875

http://www.openwall.com/lists/oss-security/2009/10/09/3

http://www.openwall.com/lists/oss-security/2009/10/09/2

http://www.debian.org/security/2009/dsa-1963

http://unbound.net/pipermail/unbound-users/2009-October/000852.html

http://secunia.com/advisories/37913

http://secunia.com/advisories/36996

http://osvdb.org/58836

Details

Source: Mitre, NVD

Published: 2009-10-13

Updated: 2025-04-09

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N