CVE-2023-35925: FastAsyncWorldEdit Core Remote Code Execution Vulnerability

MODERATE
Advisory Identifier: GHSA-whj9-m24x-qhhp
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CVSS 6.2
CWE-400
Published
Advisory Summary

CVE-2023-35925 is a MODERATE (CVSS 6.2) remote code execution vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting FastAsyncWorldEdit Core libraries in the Maven ecosystem. The issue involves fastasyncworldedit vulnerable to uncontrolled resource consumption. Remediation is available by upgrading affected packages to version 2.6.3.

CVE-2023-35925 at a Glance

CVE Identifier CVE-2023-35925
GHSA Identifier GHSA-whj9-m24x-qhhp
Severity MODERATE
CVSS v3.1 Base Score 6.2
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product FastAsyncWorldEdit Core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.2

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2023-35925

To remediate this vulnerability, upgrade all affected FastAsyncWorldEdit Core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

com.fastasyncworldedit:FastAsyncWorldEdit-Core fixed: 2.6.3 
<dependency>
    <groupId>com.fastasyncworldedit</groupId>
    <artifactId>FastAsyncWorldEdit-Core</artifactId>
    <version>2.6.3</version>
</dependency>
com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit fixed: 2.6.3 
<dependency>
    <groupId>com.fastasyncworldedit</groupId>
    <artifactId>FastAsyncWorldEdit-Bukkit</artifactId>
    <version>2.6.3</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=com.fastasyncworldedit

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-35925, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.fastasyncworldedit

Analyze the terminal output to locate any version of FastAsyncWorldEdit Core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.6.3), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.fastasyncworldedit command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In FastAsyncWorldEdit Core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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](https://github.com/IntellectualSites/.github/blob/main/SECURITY.md) 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](https://github.com/IntellectualSites/.github/blob/main/SECURITY.md).

CVE-2023-35925 Affected FastAsyncWorldEdit Core Versions

2 component(s)
Fixed Versions:
2.6.3
Product / Package Ecosystem Affected Versions Fixed Version
com.fastasyncworldedit:FastAsyncWorldEdit-Core
maven/com.fastasyncworldedit/FastAsyncWorldEdit-Core
Maven
< 2.6.3
2.6.3
com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit
maven/com.fastasyncworldedit/FastAsyncWorldEdit-Bukkit
Maven
< 2.6.3
2.6.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/IntellectualSites/FastAsyncWorldEdit/security/advisories/GHSA-whj9-m24x-qhhp
NVD — CVE-2023-35925 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-35925
FastAsyncWorldEdit Core Source Repository REPOSITORY
https://github.com/IntellectualSites/FastAsyncWorldEdit/pull/2285
FastAsyncWorldEdit Core Source Repository REPOSITORY
https://github.com/IntellectualSites/FastAsyncWorldEdit
FastAsyncWorldEdit Core Release RELEASE
https://github.com/IntellectualSites/FastAsyncWorldEdit/releases/tag/2.6.3

Frequently Asked Questions

What is CVE-2023-35925?
CVE-2023-35925 is a security vulnerability in FastAsyncWorldEdit Core involving FastAsyncWorldEdit vulnerable to Uncontrolled Resource Consumption under CWE-400: Uncontrolled Resource Consumption.
Which FastAsyncWorldEdit Core versions are affected?
Affected versions include releases prior to 2.6.3 across affected packages: com.fastasyncworldedit:FastAsyncWorldEdit-Core, com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit.
What version fixes CVE-2023-35925?
Upgrading to 2.6.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is FastAsyncWorldEdit-Core affected?
Yes, com.fastasyncworldedit:FastAsyncWorldEdit-Core is affected in releases prior to 2.6.3. Upgrade your dependency to 2.6.3 or later.
Is FastAsyncWorldEdit-Bukkit affected?
Yes, com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit is affected in releases prior to 2.6.3. Upgrade your dependency to 2.6.3 or later.
What is the CVSS score of CVE-2023-35925?
CVE-2023-35925 has a CVSS v3.1 base score of 6.2 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2023-35925?
CVE-2023-35925 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Maven dependencies for CVE-2023-35925?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.fastasyncworldedit'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-whj9-m24x-qhhp",
  "modified" : "2023-06-22T20:00:36Z",
  "published" : "2023-06-22T20:00:36Z",
  "aliases" : [ "CVE-2023-35925" ],
  "summary" : "FastAsyncWorldEdit vulnerable to Uncontrolled Resource Consumption",
  "details" : "### Coordinated Disclosure Timeline\n\n- 10.06.2023: Issue reported to IntellectualSites\n- 11.06.2023: Issue is acknowledged\n- 12.06.2023: Issue has been fixed\n- 22.06.2023: Advisory has been published\n\n### Impacted version range\n\nBefore 2.6.3\n\n### Details\n\n#### Proof of Concept\n\nAs a user, do the following:\n\n1. Select position 1 via `//pos1`\n2. Select position 2 adding the \"Infinity\" keyword via `//pos2 Infinity`\n3. Execute any further operation.\n\nThe steps 1 and 2 are interchangeable.\n\n#### Impact\n\nSuch a task has a possibility of bringing the performing server down.\n\n#### CVE\n\n- CVE-2023-35925\n\n#### Credit\n\nThis issue was discovered and [reported](https://github.com/IntellectualSites/.github/blob/main/SECURITY.md) by @SuperMonis.\n\n### Solution\n\nOn June 12, 2023, a patch, https://github.com/IntellectualSites/FastAsyncWorldEdit/pull/2285, has been merged addressing the vulnerability.\nWe strongly recommend users to update their version of FastAsyncWorldEdit to 2.6.3 as soon as possible.\n\n### Workarounds\n\nThere is no direct mitigation besides updating FastAsyncWorldEdit to a patched version.\n\n### Additional Information\n\nUsers 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.\nTo sieve through the data, you can use the regex query `\\/\\/pos[12] Infinity`, then investigate all log entries that return results.\n\n### Disclosure Policy\n\nIf you discover a security vulnerability within our software, please report the issue according to our [vulnerability disclosure policy](https://github.com/IntellectualSites/.github/blob/main/SECURITY.md).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.fastasyncworldedit:FastAsyncWorldEdit-Core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.6.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.6.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/IntellectualSites/FastAsyncWorldEdit/security/advisories/GHSA-whj9-m24x-qhhp"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-35925"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/IntellectualSites/FastAsyncWorldEdit/pull/2285"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/IntellectualSites/FastAsyncWorldEdit"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/IntellectualSites/FastAsyncWorldEdit/releases/tag/2.6.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-06-22T20:00:36Z",
    "nvd_published_at" : "2023-06-23T16:15:09Z"
  }
}