#VU16563 Authentication bypass in TIM 1531 IRC - CVE-2018-13816

Vulnerability identifier: #VU16563

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-13816

CWE-ID: CWE-592

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TIM 1531 IRC
Hardware solutions / Firmware

Vendor: Siemens

Description
The vulnerability allows a remote attacker to bypass authentication on the target system.

The weakness exists due to missing of proper authentication on port 102/tcp, although configured. A remote attacker can send packets to port 102/tcp, bypass authentication and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to version 2.0.

Vulnerable software versions

TIM 1531 IRC: before 2.0

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External links
https://cert-portal.siemens.com/productcert/pdf/ssa-982399.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.