Improper validation of integrity check value in Siemens SCALANCE XM-400 and XR-500 Devices
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-37182 |
| CWE-ID | CWE-354 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
SCALANCE XM408-4C Hardware solutions / Routers & switches, VoIP, GSM, etc SCALANCE XM408-8C Hardware solutions / Routers & switches, VoIP, GSM, etc SCALANCE XM416-4C Hardware solutions / Routers & switches, VoIP, GSM, etc SCALANCE XR524-8C 1x230V Hardware solutions / Routers & switches, VoIP, GSM, etc SCALANCE XR524-8C 2x230V Hardware solutions / Routers & switches, VoIP, GSM, etc SCALANCE XR524-8C 24V Hardware solutions / Routers & switches, VoIP, GSM, etc SCALANCE XR526-8C 1x230V Hardware solutions / Routers & switches, VoIP, GSM, etc SCALANCE XR526-8C 2x230V Hardware solutions / Routers & switches, VoIP, GSM, etc SCALANCE XR526-8C 24V Hardware solutions / Routers & switches, VoIP, GSM, etc SCALANCE XR528-6M Hardware solutions / Routers & switches, VoIP, GSM, etc SCALANCE XR552-12M Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Siemens |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Improper validation of integrity check value
EUVDB-ID: #VU64413
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-37182
CWE-ID:
CWE-354 - Improper Validation of Integrity Check Value
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass integrity checks.
The vulnerability exists due to a weak algorithm in the OSPF protocol implementation. A remote attacker can send specially crafted OSPF packets and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSCALANCE XM408-4C: before 6.5
SCALANCE XM408-8C: before 6.5
SCALANCE XM416-4C: before 6.5
SCALANCE XR524-8C 1x230V: before 6.5
SCALANCE XR524-8C 2x230V: before 6.5
SCALANCE XR524-8C 24V: before 6.5
SCALANCE XR526-8C 1x230V: before 6.5
SCALANCE XR526-8C 2x230V: before 6.5
SCALANCE XR526-8C 24V: before 6.5
SCALANCE XR528-6M: before 6.5
SCALANCE XR552-12M: before 6.5
CPE2.3- cpe:2.3:h:siemens:scalance_xm408-4c:*:*:*:*:*:*:*:
- cpe:2.3:h:siemens:scalance_xm408-8c:*:*:*:*:*:*:*:
- cpe:2.3:h:siemens:scalance_xm416-4c:*:*:*:*:*:*:*:
- cpe:2.3:h:siemens:scalance_xr524-8c,1x230v:*:*:*:*:*:*:*:
- cpe:2.3:h:siemens:scalance_xr524-8c_2x230v:*:*:*:*:*:*:*:
- cpe:2.3:h:siemens:scalance_xr524-8c_24v:*:*:*:*:*:*:*:
- cpe:2.3:h:siemens:scalance_xr526-8c_1x230v:*:*:*:*:*:*:*:
- cpe:2.3:h:siemens:scalance_xr526-8c_2x230v:*:*:*:*:*:*:*:
- cpe:2.3:h:siemens:scalance_xr526-8c_24v:*:*:*:*:*:*:*:
- cpe:2.3:h:siemens:scalance_xr528-6m:*:*:*:*:*:*:*:
- cpe:2.3:h:siemens:scalance_xr552-12m:*:*:*:*:*:*:*:
http://cert-portal.siemens.com/productcert/pdf/ssa-145224.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 device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
