Path traversal in Siemens TIA Portal

1) Path traversal

EUVDB-ID: #VU24309

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-10934

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a local user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A local user can change the contents of a configuration file and execute arbitrary code with SYSTEM privileges.

The following versions of TIA Portal are affected:

• TIA Portal v14: All versions
• TIA Portal v15: All versions prior to v15.1 Upd 4
• TIA Portal v16: All versions

Mitigation

Install update from vendor's website.

Vulnerable software versions

TIA Portal: before 15.1 Upd 4

External links

http://ics-cert.us-cert.gov/advisories/icsa-20-014-05

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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