CVE-2021-31340
Quick assessment
Affected
Siemens SIMATIC RF166C
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是西门子（Siemens）的一款组态软件。 Siemens SIMATIC 多款产品存在资源管理错误漏洞，该漏洞源于受影响的设备无法正确处理大量传入连接。 攻击者可能会利用它来导致拒绝服务情况。
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I. Basic Information for CVE-2021-31340
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 RF166C (All versions > V1.1 and < V1.3.2), SIMATIC RF185C (All versions > V1.1 and < V1.3.2), SIMATIC RF186C (All versions > V1.1 and < V1.3.2), SIMATIC RF186CI (All versions > V1.1 and < V1.3.2), SIMATIC RF188C (All versions > V1.1 and < V1.3.2), SIMATIC RF188CI (All versions > V1.1 and < V1.3.2), SIMATIC RF360R (All versions < V2.0), SIMATIC Reader RF610R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF610R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF610R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF615R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF615R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF615R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF650R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF650R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF680R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF680R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF685R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF685R FCC (All versions > V3.0 < V4.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens SIMATIC 多款产品资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC是西门子（Siemens）的一款组态软件。 Siemens SIMATIC 多款产品存在资源管理错误漏洞，该漏洞源于受影响的设备无法正确处理大量传入连接。 攻击者可能会利用它来导致拒绝服务情况。
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 RF166C | All versions > V1.1 and < V1.3.2 | - |
|
| Siemens | SIMATIC RF185C | All versions > V1.1 and < V1.3.2 | - |
|
| Siemens | SIMATIC RF186C | All versions > V1.1 and < V1.3.2 | - |
|
| Siemens | SIMATIC RF186CI | All versions > V1.1 and < V1.3.2 | - |
|
| Siemens | SIMATIC RF188C | All versions > V1.1 and < V1.3.2 | - |
|
| Siemens | SIMATIC RF188CI | All versions > V1.1 and < V1.3.2 | - |
|
| Siemens | SIMATIC RF360R | All versions < V2.0 | - |
|
| Siemens | SIMATIC Reader RF610R CMIIT | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF610R ETSI | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF610R FCC | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF615R CMIIT | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF615R ETSI | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF615R FCC | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF650R ARIB | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF650R CMIIT | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF650R ETSI | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF650R FCC | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF680R ARIB | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF680R CMIIT | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF680R ETSI | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF680R FCC | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF685R ARIB | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF685R CMIIT | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF685R ETSI | All versions > V3.0 < V4.0 | - |
|
| Siemens | SIMATIC Reader RF685R FCC | All versions > V3.0 < V4.0 | - |
|
II. Public POCs for CVE-2021-31340
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-31340 (1)
-
https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf x_refsource_MISC
Same Patch Batch · Siemens · 2021-06-08 · 5 CVEs total
| CVE-2021-33712 | Mendix SAML 数据伪造问题漏洞 | |
| CVE-2021-27387 | Simcenter Femap 缓冲区错误漏洞 | |
| CVE-2021-27390 | Siemens Jt2go 缓冲区错误漏洞 | |
| CVE-2021-27399 | Simcenter Femap 缓冲区错误漏洞 |
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V. Comments for CVE-2021-31340
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