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Improper Input Validation in IpMatcher

Critical severity GitHub Reviewed Published May 17, 2022 to the GitHub Advisory Database • Updated Aug 17, 2023

Package

nuget IpMatcher (NuGet)

Affected versions

<= 1.0.4.1

Patched versions

1.0.4.2

Description

An Input Validation Vulnerability exists in Joel Christner .NET C# packages WatsonWebserver, IpMatcher 1.0.4.1 and below (IpMatcher) and 4.1.3 and below (WatsonWebserver) due to insufficient validation of input IP addresses and netmasks against the internal Matcher list of IP addresses and subnets.

References

Published by the National Vulnerability Database May 16, 2022
Published to the GitHub Advisory Database May 17, 2022
Reviewed May 25, 2022
Last updated Aug 17, 2023

Severity

Critical
9.8
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CVE ID

CVE-2021-33318

GHSA ID

GHSA-qj93-37f5-mr29

Source code

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