Medium, CVSS 6.5npmAmendedPublished
Potential exposure of tokens to an Unauthorized Actor
CVE-2022-21671 · GHSA-7w54-gp8x-f33m
- Affected
- npm @replit/crosis < 7.3.1
- Fixed in
- 7.3.1· Vendor fix available
- Issue
- Impact When using this library as a way to programmatically communicate with Replit in a standalone fashion, if there are multiple failed attempts to contact Replit through a WebSocket, the library will attempt to communicate using a fallback poll-based proxy. The URL of the proxy has changed, so any communication done to the previous URL could potentially reach a server that is outside of Replit's control and the token used to connect to the Repl could be obtained by an attacker, leading to full compromise of that Repl (not of the account). Patches This was patched in 7.3.1, by updating the address of the fallback WebSocket polling proxy to the new one. Workarounds Specify the new address for the polling host (gp-v2.replit.com) in the ConnectArgs: For more information Thanks to https://hackerone.com/orlserg for disclosing this. If you have any questions or comments about this advisory: Open an issue in replit/crosis Email us at security@replit.com
Recommended action: Upgrade to 7.3.1 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.