GHSA-qj93-37f5-mr29

Improper Input Validation in IpMatcher

Source: GitHub Advisory Database (reviewed) Critical CVE-2021-33318

Packages

Ecosystem	Package	Affected	Fixed in
NuGet	IpMatcher	< 1.0.4.2	1.0.4.2

Details

As written in the advisory (Markdown source, shown as plain text).

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

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2021-33318 advisory
https://github.com/jchristn/IpMatcher/commit/81d77c2f33aa912dbd032b34b9e184fc6e041d89 web
https://github.com/jchristn/IpMatcher package
https://github.com/jchristn/WatsonWebserver web
https://github.com/kaoudis/advisories/blob/main/0-2021.md web