Published: 16/05/2022 Updated: 08/08/2023

CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10

CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9

VMScore: 668

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

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.

Vulnerable Product	Search on Vulmon	Subscribe to Product
watsonwebserver project watsonwebserver
ipmatcher project ipmatcher

IpMatcher versions 1041 and below for NET Core 20 and NET Framework 452 incorrectly validates octal and hexadecimal input data which can lead to indeterminate server-side request forgery, local file inclusion, remote file inclusion, and denial of service vectors ...

CWE-704 https://github.com/kaoudis/advisories/blob/main/0-2021.md https://github.com/jchristn/IpMatcher/commit/81d77c2f33aa912dbd032b34b9e184fc6e041d89 https://github.com/jchristn/WatsonWebserver https://github.com/jchristn/IpMatcher https://nvd.nist.gov https://packetstormsecurity.com/files/167178/IpMatcher-1.0.4.1-Server-Side-Request-Forgery.html

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CVE-2021-33318

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