Improper Authentication in Siemens SIMATIC WinCC and PCS 7
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-10048 |
| CWE-ID | CWE-287 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
SIMATIC PCS 7 Server applications / SCADA systems Siemens SIMATIC WinCC Server applications / SCADA systems |
| Vendor | Siemens |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Improper Authentication
EUVDB-ID: #VU50644
Risk: Low
CVSSv3.1: 5.4 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-10048
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to bypass authentication process.
The vulnerability exists due to an insecure password verification process. A local attacker can access to protected content without authentication.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSIMATIC PCS 7: All versions
Siemens SIMATIC WinCC: before 7.5 SP2
External linkshttp://cert-portal.siemens.com/productcert/pdf/ssa-944678.pdf
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
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.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
