CVE-2021-40083
First published: Wed Aug 25 2021(Updated: )
Knot Resolver before 5.3.2 is prone to an assertion failure, triggerable by a remote attacker in an edge case (NSEC3 with too many iterations used for a positive wildcard proof).
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nic Knot Resolver | <5.3.2 |
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.
Frequently Asked Questions
What is CVE-2021-40083?
CVE-2021-40083 is a vulnerability in Knot Resolver before version 5.3.2 that can be triggered by a remote attacker in an edge case.
How severe is CVE-2021-40083?
CVE-2021-40083 has a severity rating of 7.5, which is considered high.
What is the affected software for CVE-2021-40083?
The affected software for CVE-2021-40083 is Knot Resolver before version 5.3.2.
How can CVE-2021-40083 be triggered?
CVE-2021-40083 can be triggered by a remote attacker in an edge case involving NSEC3 with too many iterations used for a positive wildcard proof.
Is there a fix for CVE-2021-40083?
Yes, the fix for CVE-2021-40083 is available in Knot Resolver version 5.3.2.
- collector/nvd-index
- agent/references
- agent/severity
- agent/weakness
- agent/author
- agent/description
- agent/first-publish-date
- agent/last-modified-date
- agent/remedy
- agent/tags
- agent/softwarecombine
- agent/type
- agent/event
- collector/mitre-cve
- source/MITRE
- vendor/nic
- canonical/nic knot resolver