Upstream information

CVE-2021-41556 at MITRE

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having critical severity.

CVSS v3 Scores
CVSS detail National Vulnerability Database
Base Score 10
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact High
Availability Impact High
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1201974 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Package Hub 15 SP4
  • squirrel >= 3.0.7-bp154.3.3.1
  • squirrel-devel >= 3.0.7-bp154.3.3.1
  • squirrel-devel-static >= 3.0.7-bp154.3.3.1
  • squirrel-doc >= 3.0.7-bp154.3.3.1
  • squirrel-examples >= 3.0.7-bp154.3.3.1
 Patchnames:
openSUSE-2023-80
openSUSE Leap 15.4
  • squirrel >= 3.0.7-bp154.3.3.1
  • squirrel-devel >= 3.0.7-bp154.3.3.1
  • squirrel-devel-static >= 3.0.7-bp154.3.3.1
  • squirrel-doc >= 3.0.7-bp154.3.3.1
  • squirrel-examples >= 3.0.7-bp154.3.3.1
 Patchnames:
openSUSE-2023-80
openSUSE Tumbleweed
  • squirrel >= 3.2-1.1
  • squirrel-devel >= 3.2-1.1
  • squirrel-devel-static >= 3.2-1.1
  • squirrel-doc >= 3.2-1.1
  • squirrel-examples >= 3.2-1.1
 Patchnames:
openSUSE-Tumbleweed-2024-12611

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products past their end of life and not receiving proactive updates anymore.
SUSE Package Hub 15 SP4 squirrel Released

SUSE Timeline for this CVE

CVE page created: Fri Jul 29 06:00:19 2022
CVE page last modified: Thu Dec 11 17:00:07 2025