GHSA-whj9-m24x-qhhp FastAsyncWorldEdit vulnerable to Uncontrolled Resource Consumption

• Maven com.fastasyncworldedit:FastAsyncWorldEdit-Core: < 2.6.3 → fixed in 2.6.3 • Maven com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit: < 2.6.3 → fixed in 2.6.3

Coordinated Disclosure Timeline • 10.06.2023: Issue reported to IntellectualSites • 11.06.2023: Issue is acknowledged • 12.06.2023: Issue has been fixed • 22.06.2023: Advisory has been published Impacted version range Before 2.6.3 Details Proof of Concept As a user, do the following: 1. Select position 1 via `//pos1` 2. Select position 2 adding the "Infinity" keyword via `//pos2 Infinity` 3. Execute any further operation. The steps 1 and 2 are interchangeable. Impact Such a task has a possibility of bringing the performing server down. CVE • CVE-2023-35925 Credit This issue was discovered and reported by @SuperMonis. Solution On June 12, 2023, a patch, https://github.com/IntellectualSites/FastAsyncWorldEdit/pull/2285, has been merged addressing the vulnerability. We strongly recommend users to update their version of FastAsyncWorldEdit to 2.6.3 as soon as possible. Workarounds There is no direct mitigation besides updating FastAsyncWorldEdit to a patched version. Additional Information Users with access to the `logs/` folder or shell access on their server can try to identify possible abuses of this issue by going through the logs. To sieve through the data, you can use the regex query `\/\/pos[12] Infinity`, then investigate all log entries that return results. Disclosure Policy If you discover a security vulnerability within our software, please report the issue according to our vulnerability disclosure policy.