#VU84394 Memory leak in Siemens products - CVE-2023-38380

Vulnerability identifier: #VU84394

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-38380

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SIMATIC CP 1242-7 V2
Hardware solutions / Firmware
SIMATIC CP 1243-1
Hardware solutions / Firmware
SIMATIC CP 1243-1 DNP3
Hardware solutions / Firmware
SIMATIC CP 1243-1 IEC
Hardware solutions / Firmware
SIMATIC CP 1243-7 LTE
Hardware solutions / Firmware
SIMATIC CP 1243-8 IRC
Hardware solutions / Firmware
SIMATIC CP 1543-1
Hardware solutions / Firmware
SINAMICS S210
Hardware solutions / Firmware
SIPLUS NET CP 1543-1
Hardware solutions / Firmware

Vendor: Siemens

Description
The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in the webserver implementation. A remote attacker can force the application to leak memory and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SIMATIC CP 1242-7 V2: All versions

SIMATIC CP 1243-1: All versions

SIMATIC CP 1243-1 DNP3: All versions

SIMATIC CP 1243-1 IEC: All versions

SIMATIC CP 1243-7 LTE: All versions

SIMATIC CP 1243-8 IRC: All versions

SIMATIC CP 1543-1: All versions

SINAMICS S210: 6.1

SIPLUS NET CP 1543-1: All versions

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External links
https://cert-portal.siemens.com/productcert/pdf/ssa-693975.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 Internet.

Is there known malware, which exploits this vulnerability?

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