Servers and applications
CVE-2009-4022
Unspecified vulnerability in ISC BIND 9.0.x through 9.3.x, 9.4 before 9.4.3-P4, 9.5 before 9.5.2-P1, 9.6 before 9.6.1-P2, and 9.7 beta before 9.7.0b3, with DNSSEC validation enabled and checking disabled (CD), allows remote attackers to conduct DNS cache poisoning attacks by receiving a recursive client query and sending a response that contains an Additional section with crafted data, which is…
- Severity
- Low 2.6
- Published
- 25 Nov 2009
- Last changed
- 16 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Exploit chance
- 8% in the next 30 daysHigher than 94% of CVEs. EPSS by FIRST, 12 Nov 2026
- Attack
- Over the network · Only under certain conditions · No login needed
- Attacker can
- Change some data
- CVSS vector
AV:N/AC:H/Au:N/C:N/I:P/A:N- Sources
- NVD
Description
Unspecified vulnerability in ISC BIND 9.0.x through 9.3.x, 9.4 before 9.4.3-P4, 9.5 before 9.5.2-P1, 9.6 before 9.6.1-P2, and 9.7 beta before 9.7.0b3, with DNSSEC validation enabled and checking disabled (CD), allows remote attackers to conduct DNS cache poisoning attacks by receiving a recursive client query and sending a response that contains an Additional section with crafted data, which is not properly handled when the response is processed "at the same time as requesting DNSSEC records (DO)," aka Bug 20438.
Affected software
| Software | Affected versions |
|---|---|
BIND 9Servers and applications · cpe:a:isc:bind |
All 167 release lines
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