#VU18843 Use of hard-coded credentials in LOGO! - CVE-2019-10920


Vulnerability identifier: #VU18843

Vulnerability risk: High

CVSSv4.0: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2019-10920

CWE-ID: CWE-798

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
LOGO!
Hardware solutions / Firmware

Vendor: Siemens

Description

The vulnerability allows a remote attacker to gain access to vulnerable device.

The vulnerability exists due to presence of hard-coded credentials in application code. A remote unauthenticated attacker with access to port 10005/tcp can decrypt project data with a hardcoded encryption key.


Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vendor's recommendation:
  • Apply Defense-in-Depth concept, including protection concept outlined in the system manual.

Vulnerable software versions

LOGO!: 1.0 - 8.2.1

External links
https://cert-portal.siemens.com/productcert/pdf/ssa-542701.pdf

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. However, a fully functional exploit for this vulnerability is available.


Latest bulletins with this vulnerability


Use of hard-coded credentials in Siemens LOGO!