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CVE-2021-33503

Description

An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.

POC

Reference

- https://www.oracle.com/security-alerts/cpuoct2021.html

Github

- https://github.com/GarvitBanga/devsecops-pr-gate

- https://github.com/HotDB-Community/HotDB-Engine

- https://github.com/OkiriGabriel/CVE-vul-docker

- https://github.com/aryanxsh/example-vulnerable-repo

- https://github.com/byteakp/OptiDock

- https://github.com/dbrennand/virustotal-python

- https://github.com/elliotsecops/VulnGuard

- https://github.com/engn33r/awesome-redos-security

- https://github.com/fkie-cad/nvd-json-data-feeds

- https://github.com/p-rog/cve-analyser

- https://github.com/tonywangs/code-canary