CVE-2021-41556
Quick assessment
Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
SQUIRREL是编程语言SQUIRREL 3.2稳定版。 SQUIRREL 2.2.5及之前版本和3.1及之前的3.x版本存在缓冲区错误漏洞，该漏洞源于sqclass.cpp允许越界读取（在核心解释器中），可导致代码执行，如果受害者执行攻击者控制的squirrel脚本，即使文件系统功能等所有危险功能已被禁用，攻击者仍有可能突破squirrel脚本沙盒，攻击者可能会滥用这个漏洞针对（例如）允许通过SquirrelScripts进行自定义的云服务或通过嵌入Squirrel引擎的视频游戏分发恶意软件。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-41556
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
SQUIRREL 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SQUIRREL是编程语言SQUIRREL 3.2稳定版。 SQUIRREL 2.2.5及之前版本和3.1及之前的3.x版本存在缓冲区错误漏洞，该漏洞源于sqclass.cpp允许越界读取（在核心解释器中），可导致代码执行，如果受害者执行攻击者控制的squirrel脚本，即使文件系统功能等所有危险功能已被禁用，攻击者仍有可能突破squirrel脚本沙盒，攻击者可能会滥用这个漏洞针对（例如）允许通过SquirrelScripts进行自定义的云服务或通过嵌入Squirrel引擎的视频游戏分发恶意软件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
|
II. Public POCs for CVE-2021-41556
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-41556 (1)
Mailing List Discussions for CVE-2021-41556 (2)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M3FQILX7UUEERSDPMZP3MKGTMY2E7ESU/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BV7SJJ44AGAX4ILIVPREIXPJ2GOG3FKV/ vendor-advisory x_refsource_FEDORA
Security Blog Posts for CVE-2021-41556 (1)
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https://blog.sonarsource.com/squirrel-vm-sandbox-escape/ x_refsource_MISC
Other References for CVE-2021-41556 (1)
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http://www.squirrel-lang.org/#download x_refsource_MISC
Same Patch Batch · n/a · 2022-07-28 · 46 CVEs total
| CVE-2022-36992 | 9.9 CRITICAL | Veritas NetBackup 安全漏洞 |
| CVE-2022-36990 | 9.6 CRITICAL | Veritas NetBackup 安全漏洞 |
| CVE-2022-36989 | 8.8 HIGH | Veritas NetBackup 安全漏洞 |
| CVE-2022-36993 | 8.8 HIGH | Veritas NetBackup 安全漏洞 |
| CVE-2022-36986 | 8.6 HIGH | Veritas NetBackup 安全漏洞 |
| CVE-2022-36987 | 8.5 HIGH | Veritas NetBackup 安全漏洞 |
| CVE-2022-36991 | 8.1 HIGH | Veritas NetBackup 安全漏洞 |
| CVE-2022-36988 | 8.0 HIGH | Veritas NetBackup 安全漏洞 |
| CVE-2022-36985 | 7.8 HIGH | Veritas NetBackup 安全漏洞 |
| CVE-2022-36984 | 7.7 HIGH | Veritas NetBackup 安全漏洞 |
| CVE-2022-36997 | 7.1 HIGH | Veritas NetBackup 代码问题漏洞 |
| CVE-2022-37000 | 6.5 MEDIUM | Veritas NetBackup 安全漏洞 |
| CVE-2022-36999 | 6.5 MEDIUM | Veritas NetBackup 安全漏洞 |
| CVE-2022-36994 | 6.3 MEDIUM | Veritas NetBackup 安全漏洞 |
| CVE-2022-36998 | 6.3 MEDIUM | Veritas NetBackup 缓冲区错误漏洞 |
| CVE-2022-36995 | 4.3 MEDIUM | Veritas NetBackup 安全漏洞 |
| CVE-2022-36996 | 4.3 MEDIUM | Veritas NetBackup 安全漏洞 |
| CVE-2022-30287 | Horde Groupware Webmail 跨站请求伪造漏洞 | |
| CVE-2022-34593 | DPTech VPN 安全漏洞 | |
| CVE-2022-34580 | Advanced School Management System 跨站脚本漏洞 |
Showing top 20 of 46 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-41556
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