Vulnerability identifier: #VU25265

Vulnerability risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2019-13926

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SCALANCE S602
Hardware solutions / Firmware
SCALANCE S612
Hardware solutions / Firmware
SCALANCE S623
Hardware solutions / Firmware
SCALANCE S627-2M
Hardware solutions / Firmware

Vendor: Siemens

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to uncontrolled resource consumption. A remote attacker can send a specially crafted packets to Port 443/TCP, trigger resource exhaustion and perform a denial of service (DoS) attack.

A cold reboot is required to restore the functionality of the device.

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

Vulnerable software versions

SCALANCE S602: 3.0

SCALANCE S612: 3.0

SCALANCE S623: 3.0

SCALANCE S627-2M: 3.0

---

External links
http://cert-portal.siemens.com/productcert/pdf/ssa-591405.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.