Headline
GHSA-whj9-m24x-qhhp: FastAsyncWorldEdit vulnerable to Uncontrolled Resource Consumption
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:
- Select position 1 via
//pos1 - Select position 2 adding the “Infinity” keyword via
//pos2 Infinity - 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.
Package
maven com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit (Maven)
Affected versions
< 2.6.3
maven com.fastasyncworldedit:FastAsyncWorldEdit-Core (Maven)
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:
- Select position 1 via //pos1
- Select position 2 adding the “Infinity” keyword via //pos2 Infinity
- 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, IntellectualSites/FastAsyncWorldEdit#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.
References
- GHSA-whj9-m24x-qhhp
- IntellectualSites/FastAsyncWorldEdit#2285
- https://github.com/IntellectualSites/FastAsyncWorldEdit/releases/tag/2.6.3
Published to the GitHub Advisory Database
Jun 22, 2023
Related news
FastAsyncWorldEdit (FAWE) is designed for efficient world editing. This vulnerability enables the attacker to select a region with the `Infinity` keyword (case-sensitive!) and executes any operation. This has a possibility of bringing the performing server down. This issue has been fixed in version 2.6.3.