high
7.5
CWE
407
Advisory Published
Updated

CVE-2022-40188

First published: Fri Sep 23 2022(Updated: )

Knot Resolver before 5.5.3 allows remote attackers to cause a denial of service (CPU consumption) because of algorithmic complexity. During an attack, an authoritative server must return large NS sets or address sets.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Nic Knot Resolver<5.5.3
Fedoraproject Fedora=35
Fedoraproject Fedora=36
Fedoraproject Fedora=37
Debian Debian Linux=10.0
ubuntu/knot-resolver<5.5.1-5ubuntu0.22.10.1
5.5.1-5ubuntu0.22.10.1
ubuntu/knot-resolver<5.5.3-1
5.5.3-1
ubuntu/knot-resolver<2.1.1-1ubuntu0.1~
2.1.1-1ubuntu0.1~
ubuntu/knot-resolver<3.2.1-3ubuntu2.1
3.2.1-3ubuntu2.1
ubuntu/knot-resolver<5.4.4-1ubuntu0.1~
5.4.4-1ubuntu0.1~
ubuntu/knot-resolver<1.0.0~
1.0.0~
debian/knot-resolver<=3.2.1-3<=5.3.1-1+deb11u1
3.2.1-3+deb10u1
5.6.0-1
5.7.0-1
<5.5.3
=35
=36
=37
=10.0

Remedy

https://github.com/CZ-NIC/knot-resolver/commit/f6577a20e493c7fbdac124d7544bf1846b084185

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2022-40188?

    CVE-2022-40188 is a vulnerability in Knot Resolver before version 5.5.3 that allows remote attackers to cause a denial of service (CPU consumption) due to algorithmic complexity.

  • How severe is CVE-2022-40188?

    CVE-2022-40188 has a severity rating of 7.5 (high).

  • Which software versions are affected by CVE-2022-40188?

    Knot Resolver versions up to and including 5.5.1-5ubuntu0.22.10.1, 5.5.3-1, 2.1.1-1ubuntu0.1~, 3.2.1-3ubuntu2.1, 5.4.4-1ubuntu0.1~, and 1.0.0~ are affected.

  • How do I fix CVE-2022-40188?

    To fix CVE-2022-40188, update Knot Resolver to version 5.5.3 or higher.

  • What is the Common Weakness Enumeration (CWE) ID for CVE-2022-40188?

    The Common Weakness Enumeration (CWE) ID for CVE-2022-40188 is CWE-407.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203