critical9.8
CVE-2021-33318
Improper Input Validation in IpMatcher
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | IpMatcher | <= 1.0.4.1 | 1.0.4.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Ipmatcher Project | Ipmatcher | through 1.0.4.1 |
| Watsonwebserver Project | Watsonwebserver | through 4.1.3 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/jchristn/IpMatcher
- https://github.com/jchristn/IpMatcher/commit/81d77c2f33aa912dbd032b34b9e184fc6e041d89
- https://github.com/jchristn/WatsonWebserver
- https://github.com/kaoudis/advisories/blob/main/0-2021.md
- https://github.com/advisories/GHSA-qj93-37f5-mr29
- https://nvd.nist.gov/vuln/detail/CVE-2021-33318