Server-side Request Forgery (SSRF) Affecting github.com/pterodactyl/wings/router/downloader package, versions >=1.2.1 <1.3.0
Snyk CVSS
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Test your applications- Snyk ID SNYK-GOLANG-GITHUBCOMPTERODACTYLWINGSROUTERDOWNLOADER-1083290
- published 9 Mar 2021
- disclosed 12 Feb 2021
- credit Sam Sanoop of Snyk Security Team
How to fix?
Upgrade github.com/pterodactyl/wings/router/downloader
to version 1.3.0 or higher.
Overview
github.com/pterodactyl/wings/router/downloader is a Wings is Pterodactyl's server control plane, built for the rapidly changing gaming industry and designed to be highly performant and secure.
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF). It is possible for a malicious user to bypass the internalRanges
blacklist check to scan or access resources on the local network by using decimal notation. The attack complexity of this vulnerability is high and exploitation is unlikely since Golang doesn't seem to support dialing IPs in decimal notation.
PoC
http://0177.0.0.1/
http://2130706433/ = http://127.0.0.1
http://3232235521/ = http://192.168.0.1
http://3232235777/ = http://192.168.1.1
http://2852039166/ = http://169.254.169.254