CVEs-PoC/2023/CVE-2023-26103.md

CVE-2023-26103

Description

Versions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the upgradeWebSocket function, which contains regexes in the form of /s*,s*/, used for splitting the Connection/Upgrade header. A specially crafted Connection/Upgrade header can be used to significantly slow down a web socket server.

POC

Reference

• https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970

Github

• https://github.com/dellalibera/dellalibera