Headline
GHSA-jc97-h3h9-7xh6: Regular Expression Denial of Service in Deno.upgradeWebSocket API
Impact
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.
Patches
It is recommended that users upgrade to Deno 1.31.0.
Regular Expression Denial of Service in Deno.upgradeWebSocket API
Moderate severity GitHub Reviewed Published Mar 23, 2023 in denoland/deno • Updated Apr 3, 2023
Related news
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. This issue has been patched in version 1.31.0.
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.