#VU56637 Cleartext storage of sensitive information in SIMATIC NET CP 1545-1 and SIMATIC CP 1543-1 - CVE-2021-33716

Vulnerability identifier: #VU56637

Vulnerability risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-33716

CWE-ID: CWE-312

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
SIMATIC NET CP 1545-1
Hardware solutions / Firmware
SIMATIC CP 1543-1
Hardware solutions / Firmware

Vendor: Siemens

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the storage of sensitive information in plain-text. A remote attacker on the local network can retrieve sensitive information stored in cleartext.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SIMATIC NET CP 1545-1: All versions

SIMATIC CP 1543-1: before 3.0

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External links
https://cert-portal.siemens.com/productcert/pdf/ssa-535997.pdf

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.