CVE-2025-25200

Feb. 12, 2025, 6:15 p.m.

None
No Score

Description

Koa is expressive middleware for Node.js using ES2017 async functions. Prior to versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3, Koa uses an evil regex to parse the `X-Forwarded-Proto` and `X-Forwarded-Host` HTTP headers. This can be exploited to carry out a Denial-of-Service attack. Versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3 fix the issue.

Product(s) Impacted

Product Versions
Koa
  • 0.21.2
  • 1.7.1
  • 2.15.4
  • 3.0.0-alpha.3

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-1333
Inefficient Regular Expression Complexity
The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.

References

https://github.com/koajs/koa/blob/master/lib/request.js#L259
https://github.com/koajs/koa/blob/master/lib/request.js#L404
https://github.com/koajs/koa/commit/5054af6e31ffd451a4151a1fe144cef6e5d0d83c
https://github.com/koajs/koa/commit/5f294bb1c7c8d9c61904378d250439a321bffd32
https://github.com/koajs/koa/commit/93fe903fc966635a991bcf890cfc3427d33a1a08
https://github.com/koajs/koa/releases/tag/2.15.4
https://github.com/koajs/koa/security/advisories/GHSA-593f-38f6-jp5m

Tags

security-advisories@github.com
CWE-1333
2025-02-12
CVE-2025-25200

Timeline

Published: Feb. 12, 2025, 6:15 p.m.
Last Modified: Feb. 12, 2025, 6:15 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

security-advisories@github.com

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.