Remote code execution in Siemens TIM 1531 IRC

1) Authentication bypass

EUVDB-ID: #VU16563

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-13816

CWE-ID: CWE-592 - Authentication Bypass Issues

Exploit availability: No

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

External links

http://cert-portal.siemens.com/productcert/pdf/ssa-982399.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.