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CVE-2021-38409— Fuji Electric Tellus Lite V-Simulator uninitialized pointer

Quick assessment

Affected
Fuji Electric V-Server Lite
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.

Fuji Electric V-Server Lite是日本Fuji Electric公司的一款用于工业环境的远程监控软件。该软件可收集PLC、温度控制器、逆变器等设备的信息。 Fuji Electric Tellus Lite V-Simulator和V-Server Lite存在缓冲区错误漏洞，该漏洞源于应用在解析特制的项目文件可能会导致基于堆的缓冲区溢出，这可能允许攻击者执行任意代码。

CVSS 7.8 · High EPSS 0.69% · P51

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-38409

Vulnerability Information
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Vulnerability Title
Fuji Electric Tellus Lite V-Simulator uninitialized pointer
Source: CVE Program / CVE List V5
Vulnerability Description
Fuji Electric V-Server Lite and Tellus Lite V-Simulator prior to v4.0.12.0 is vulnerable to an access of uninitialized pointer, which may allow an attacker read from or write to unexpected memory locations, leading to a denial-of-service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用未经初始化的指针
Source: CVE Program / CVE List V5
Vulnerability Title
Fuji Electric V-Server Lite 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fuji Electric V-Server Lite是日本Fuji Electric公司的一款用于工业环境的远程监控软件。该软件可收集PLC、温度控制器、逆变器等设备的信息。 Fuji Electric Tellus Lite V-Simulator和V-Server Lite存在缓冲区错误漏洞，该漏洞源于应用在解析特制的项目文件可能会导致基于堆的缓冲区溢出，这可能允许攻击者执行任意代码。
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
Fuji Electric V-Server Lite unspecified ~ 4.0.12.0 -
Fuji Electric Tellus Lite V-Simulator unspecified ~ 4.0.12.0 -

II. Public POCs for CVE-2021-38409

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III. Intelligence Information for CVE-2021-38409

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Vendor Advisories for CVE-2021-38409 (1)

Same Patch Batch · Fuji Electric · 2021-12-20 · 6 CVEs total

CVE-2021-38401 7.8 HIGH Fuji Electric Tellus Lite V-Simulator untrusted pointer dereference
CVE-2021-38413 7.8 HIGH Fuji Electric Tellus Lite V-Simulator stack based buffer overflow
CVE-2021-38415 7.8 HIGH Fuji Electric Tellus Lite V-Simulator heap based buffer overflow
CVE-2021-38419 7.8 HIGH Fuji Electric Tellus Lite V-Simulator out of bounds write
CVE-2021-38421 7.8 HIGH Fuji Electric Tellus Lite V-Simulator out of bounds read

IV. Related Vulnerabilities

Same product: V-Server Lite
Same vendor: Fuji Electric
Same weakness: CWE-824

V. Comments for CVE-2021-38409

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