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CVE-2021-40358

Quick assessment

Affected
Siemens SIMATIC PCS 7 V8.2
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.

Siemens SIMATIC PCS 7和Siemens SIMATIC WinCC都是德国西门子（Siemens）公司的产品。Siemens SIMATIC PCS 7是一套过程控制系统。Siemens SIMATIC WinCC是一套自动化的数据采集与监控（SCADA）系统。 Siemens SIMATIC PCS 和 Siemens SIMATIC WinCC 存在路径遍历漏洞，该漏洞源于受影响系统的合法文件操作不能正确中和路径名中的特殊元素。然后，攻然后，攻击者可能会导致路径名解析到服务器上受限

CVSS 9.9 · Critical EPSS 1.27% · P69
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I. Basic Information for CVE-2021-40358

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3 UC04), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1), SIMATIC WinCC V15 and earlier (All versions < V15 SP1 Update 7), SIMATIC WinCC V16 (All versions < V16 Update 5), SIMATIC WinCC V17 (All versions < V17 Update 2), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 5). Legitimate file operations on the web server of the affected systems do not properly neutralize special elements within the pathname. An attacker could then cause the pathname to resolve to a location outside of the restricted directory on the server and read, write or delete unexpected critical files.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens SIMATIC PCS 7和SIMATIC WinCC 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC PCS 7和Siemens SIMATIC WinCC都是德国西门子（Siemens）公司的产品。Siemens SIMATIC PCS 7是一套过程控制系统。Siemens SIMATIC WinCC是一套自动化的数据采集与监控（SCADA）系统。 Siemens SIMATIC PCS 和 Siemens SIMATIC WinCC 存在路径遍历漏洞，该漏洞源于受影响系统的合法文件操作不能正确中和路径名中的特殊元素。然后，攻然后，攻击者可能会导致路径名解析到服务器上受限
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
Siemens SIMATIC PCS 7 V8.2 All versions -
Siemens SIMATIC PCS 7 V9.0 All versions < V9.0 SP3 UC04 -
Siemens SIMATIC PCS 7 V9.1 All versions < V9.1 SP1 -
Siemens SIMATIC WinCC V15 and earlier All versions < V15 SP1 Update 7 -
Siemens SIMATIC WinCC V16 All versions < V16 Update 5 -
Siemens SIMATIC WinCC V17 All versions < V17 Update 2 -
Siemens SIMATIC WinCC V7.4 All versions < V7.4 SP1 Update 19 -
Siemens SIMATIC WinCC V7.5 All versions < V7.5 SP2 Update 5 -

II. Public POCs for CVE-2021-40358

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III. Intelligence Information for CVE-2021-40358

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Vendor Advisories for CVE-2021-40358 (1)

Same Patch Batch · Siemens · 2021-11-09 · 25 CVEs total

CVE-2021-31346 8.2 HIGH Siemens Nucleus 安全漏洞
CVE-2021-40359 7.7 HIGH Siemens SIMATIC PCS 7和SIMATIC WinCC 路径遍历漏洞
CVE-2021-31345 7.5 HIGH Siemens Nucleus 安全漏洞
CVE-2021-31890 7.5 HIGH Siemens Nucleus ReadyStart 安全漏洞
CVE-2021-31889 7.5 HIGH Siemens Nucleus 数字错误漏洞
CVE-2021-31881 7.1 HIGH Siemens Nucleus ReadyStart 缓冲区错误漏洞
CVE-2021-31883 7.1 HIGH Siemens Nucleus ReadyStart 缓冲区错误漏洞
CVE-2021-31882 6.5 MEDIUM Siemens Nucleus 缓冲区错误漏洞
CVE-2021-40364 5.5 MEDIUM Siemens SIMATIC PCS 7和SIMATIC WinCC 日志信息泄露漏洞
CVE-2021-31344 5.3 MEDIUM Siemens Nucleus ReadyStart 安全漏洞
CVE-2021-31886 Siemens Nucleus ReadyStart 缓冲区错误漏洞
CVE-2020-10052 SIMATIC RTLS 日志信息泄露漏洞
CVE-2020-10053 SIMATIC RTLS 安全漏洞
CVE-2020-10054 SIMATIC RTLS 输入验证错误漏洞
CVE-2021-31884 Siemens Nucleus ReadyStart 安全漏洞
CVE-2021-31885 Siemens Nucleus ReadyStart 安全漏洞
CVE-2021-42026 Siemens Mendix 安全漏洞
CVE-2021-31888 Siemens Nucleus ReadyStart 缓冲区错误漏洞
CVE-2021-31887 Siemens Nucleus ReadyStart 缓冲区错误漏洞
CVE-2021-37207 Siemens Sentron Powermanager 安全漏洞

Showing top 20 of 25 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: SIMATIC PCS 7 V8.2
Same vendor: Siemens
Same weakness: CWE-22

V. Comments for CVE-2021-40358

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