Denial of service in Siemens SCALANCE XM-400 and XR-500 Devices
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-28393 |
| CWE-ID | CWE-682 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
SCALANCE XM-400 Hardware solutions / Routers & switches, VoIP, GSM, etc SCALANCE XR-500 Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Incorrect calculation
EUVDB-ID: #VU53228
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-2020-28393
CWE-ID:
CWE-682 - Incorrect Calculation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect calculation issue. A remote attacker can send a specially crafted OSPF packet and cause a denial of service condition.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSCALANCE XM-400: before 6.4
SCALANCE XR-500: before 6.4
External linkshttp://cert-portal.siemens.com/productcert/pdf/ssa-116379.pdf
http://us-cert.cisa.gov/ics/advisories/icsa-21-131-10
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
