Denial of service in Siemens SIMATIC WinAC RTX (F) 2010

Published: 2019-10-11 | Updated: 2019-10-11
Severity Medium
Patch available NO
Number of vulnerabilities 1
CVE ID CVE-2019-13921
CWE ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software SIMATIC WinAC RTX (F) 2010 Subscribe
Vendor Siemens

Security Advisory

This security advisory describes one medium risk vulnerability.

1) Resource exhaustion

Severity: Medium

CVSSv3: 6.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C] [PCI]

CVE-ID: CVE-2019-13921

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Description

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

The vulnerability exists due to improper resource management when processing HTTP requests. A remote attacker can send a specially crafted large HTTP request to the host where WinAC RTX is running, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

SIMATIC WinAC RTX (F) 2010: -

CPE External links

https://cert-portal.siemens.com/productcert/pdf/ssa-878278.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.