Multiple vulnerabilities in Siemens Industrial Products
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-37185 CVE-2021-37204 CVE-2021-37205 |
| CWE-ID | CWE-672 CWE-401 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
SIMATIC ET 200SP Open Controller CPU 1515SP PC2 Server applications / SCADA systems SIMATIC S7-1500 Software Controller Server applications / SCADA systems SIMATIC S7-PLCSIM Advanced Server applications / SCADA systems SIMATIC S7-1200 CPU family Hardware solutions / Firmware SIMATIC S7-1500 CPU Hardware solutions / Firmware SIMATIC Drive Controller Hardware solutions / Firmware SIMATIC TIM 1531 IRC Hardware solutions / Firmware |
| Vendor | Siemens |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Operation on a Resource after Expiration or Release
EUVDB-ID: #VU60530
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-37185
CWE-ID:
CWE-672 - Operation on a Resource after Expiration or Release
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to operation on a resource after expiration or release in a PLC. A remote attacker can send a specially crafted packet and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSIMATIC ET 200SP Open Controller CPU 1515SP PC2: All versions
SIMATIC S7-1200 CPU family: 4.5 - 4.5.1
SIMATIC S7-1500 CPU: 2.9.2 - 2.9.3
SIMATIC S7-1500 Software Controller: All versions
SIMATIC S7-PLCSIM Advanced: All versions
SIMATIC Drive Controller: before 2.9.4
SIMATIC TIM 1531 IRC: before 2.2
External linkshttp://cert-portal.siemens.com/productcert/pdf/ssa-838121.pdf
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Operation on a Resource after Expiration or Release
EUVDB-ID: #VU60531
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-37204
CWE-ID:
CWE-672 - Operation on a Resource after Expiration or Release
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to operation on a resource after expiration or release in a PLC. A remote attacker can send a specially crafted packet and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSIMATIC ET 200SP Open Controller CPU 1515SP PC2: All versions
SIMATIC S7-1200 CPU family: 4.5 - 4.5.1
SIMATIC S7-1500 CPU: 2.9.2 - 2.9.3
SIMATIC S7-1500 Software Controller: All versions
SIMATIC S7-PLCSIM Advanced: All versions
SIMATIC Drive Controller: before 2.9.4
SIMATIC TIM 1531 IRC: before 2.2
External linkshttp://cert-portal.siemens.com/productcert/pdf/ssa-838121.pdf
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Memory leak
EUVDB-ID: #VU60532
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-37205
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in a PLC. A remote attacker can force the application to leak memory and perform denial of service attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSIMATIC ET 200SP Open Controller CPU 1515SP PC2: All versions
SIMATIC S7-1200 CPU family: 4.5 - 4.5.1
SIMATIC S7-1500 CPU: 2.9.2 - 2.9.3
SIMATIC S7-1500 Software Controller: All versions
SIMATIC S7-PLCSIM Advanced: All versions
SIMATIC Drive Controller: before 2.9.4
SIMATIC TIM 1531 IRC: before 2.2
External linkshttp://cert-portal.siemens.com/productcert/pdf/ssa-838121.pdf
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
