Tim Condon

3 exploits Active since Feb 2021
CVE-2021-21328 WRITEUP MEDIUM WRITEUP
Vapor < 4.40.1 - Denial of Service via Unlimited Route Path Creation
Vapor is a web framework for Swift. In Vapor before version 4.40.1, there is a DoS attack against anyone who Bootstraps a metrics backend for their Vapor app. The following is the attack vector: 1. send unlimited requests against a vapor instance with different paths. this will create unlimited counters and timers, which will eventually drain the system. 2. downstream services might suffer from this attack as well by being spammed with error paths. This has been patched in 4.40.1. The `DefaultResponder` will rewrite any undefined route paths for to `vapor_route_undefined` to avoid unlimited counters.
CVSS 5.3
CVE-2022-31005 WRITEUP HIGH WRITEUP
Vapor < 4.60.3 - Denial of Service via Integer Overflow in FileMiddleware
Vapor is an HTTP web framework for Swift. Users of Vapor prior to version 4.60.3 with FileMiddleware enabled are vulnerable to an integer overflow vulnerability that can crash the application. Version 4.60.3 contains a patch for this issue. As a workaround, disable FileMiddleware and serve via a Content Delivery Network.
CVSS 7.5
CVE-2022-31019 WRITEUP HIGH WRITEUP
Vapor < 4.61.1 - Denial of Service via Uncontrolled Recursion in Automatic Content Decoding
Vapor is a server-side Swift HTTP web framework. When using automatic content decoding an attacker can craft a request body that can make the server crash with the following request: `curl -d "array[_0][0][array][_0][0][array]$(for f in $(seq 1100); do echo -n '[_0][0][array]'; done)[string][_0]=hello%20world" http://localhost:8080/foo`. The issue is unbounded, attacker controlled stack growth which will at some point lead to a stack overflow and a process crash. This issue has been fixed in version 4.61.1.
CVSS 7.5