File and Directory Information Exposure in Siemens SIMATIC WinCC and SIMATIC PCS 7
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-40363 |
| CWE-ID | CWE-538 |
| 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) File and Directory Information Exposure
EUVDB-ID: #VU60533
Risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-40363
CWE-ID:
CWE-538 - File And Directory Information Exposure
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to the affected component stores the credentials of a local system account in a potentially publicly accessible project file using an outdated cipher algorithm. A local user can gain unauthorized access to sensitive information on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSIMATIC PCS 7: 8.0 - 9.1
Siemens SIMATIC WinCC: 7.0 - 17 Update 2
External linkshttp://cert-portal.siemens.com/productcert/pdf/ssa-914168.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.
