Denial of service in Siemens SIMATIC RFID Readers
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-31340 |
| CWE-ID | CWE-400 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
SIMATIC RF166C Server applications / SCADA systems SIMATIC RF185C Hardware solutions / Routers & switches, VoIP, GSM, etc SIMATIC RF186C Hardware solutions / Routers & switches, VoIP, GSM, etc SIMATIC RF186CI Hardware solutions / Routers & switches, VoIP, GSM, etc SIMATIC RF188C Hardware solutions / Routers & switches, VoIP, GSM, etc SIMATIC RF188CI Hardware solutions / Routers & switches, VoIP, GSM, etc SIMATIC RF360R Hardware solutions / Firmware SIMATIC RF615R Hardware solutions / Firmware SIMATIC RF680R Hardware solutions / Firmware SIMATIC RF685R Hardware solutions / Firmware |
| Vendor | Siemens |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Resource exhaustion
EUVDB-ID: #VU54016
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-31340
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSIMATIC RF166C: 1.1
SIMATIC RF185C: 1.1
SIMATIC RF186C: 1.1
SIMATIC RF186CI: 1.1
SIMATIC RF188C: 1.1
SIMATIC RF188CI: 1.1
SIMATIC RF360R: All versions
SIMATIC RF615R: before 3.0
SIMATIC RF680R: before 3.0
SIMATIC RF685R: before 3.0
CPE2.3- cpe:2.3:a:siemens:simatic_rf166c:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_rf166c:1.1:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf185c:*:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf185c:1.1:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf186c:*:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf186c:1.1:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf186ci:*:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf186ci:1.1:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf188c:*:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf188c:1.1:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf188ci:*:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf360r:*:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf615r:*:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf680r:*:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_rf685r:*:*:*:*:*:*:*:*
http://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf
http://us-cert.cisa.gov/ics/advisories/icsa-21-159-13
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.
