Medium severity · published Jun 20, 2022
CVE-2022-32983
Knot Resolver through 5.5.1 may allow DNS cache poisoning when there is an attempt to limit forwarding actions by filters
5.3
CVSS
0.8%
EPSS
No
On KEV
Description
Knot Resolver through 5.5.1 may allow DNS cache poisoning when there is an attempt to limit forwarding actions by filters.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KR
Knot Resolver · Nic
through 5.5.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-32983
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-32983
Patch
https://github.com/CZ-NIC/knot-resolver/commit/ccb9d9794db5eb757c33becf65cb1cf48ecfd968
Vendor Advisory
https://knot-resolver.readthedocs.io/en/stable/modules-policy.html#forwarding
More from Knot Resolver
8.1
CVE-2026-66374
Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ (DNS-over-QUIC) receive path
7.5
CVE-2023-50387
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more…
7.5
CVE-2023-46317
Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers
7.5
CVE-2023-26249
Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service
7.5
CVE-2022-40188
Knot Resolver before 5.5.3 allows remote attackers to cause a denial of service (CPU consumption) because of algorithmic complexity