CVE-2021-41556

 

Published at: - 28-07-2022 11:15

Last modified: - 10-08-2022 10:15

Total changes: - 4

Description

sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that can lead to Code Execution. If a victim executes an attacker-controlled squirrel script, it is possible for the attacker to break out of the squirrel script sandbox even if all dangerous functionality such as File System functions has been disabled. An attacker might abuse this bug to target (for example) Cloud services that allow customization via SquirrelScripts, or distribute malware through video games that embed a Squirrel Engine.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

 

Verification logic

 

Reference

• http://www.squirrel-lang.org/#download
• https://github.com/albertodemichelis/squirrel/commit/23a0620658714b996d20da3d4dd1a0dcf9b0bd98
• https://blog.sonarsource.com/squirrel-vm-sandbox-escape/
• FEDORA-2022-e81c0db364-
• FEDORA-2022-e139f256f6-

 

Keywords

NVD

 

CVE-2021-41556

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures