Multiple vulnerabilities in Siemens Solid Edge

Published: 2021-06-10

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-31342 CVE-2021-31343
CWE-ID	CWE-787
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Solid Edge SE2020 Server applications / SCADA systems Solid Edge SE2021 Server applications / SCADA systems
Vendor	Siemens

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU54017

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-31342

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in the ugeom2d.dll library. A remote attacker can create a specially crafted DFT file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Solid Edge SE2020: before 2020MP14

Solid Edge SE2021: before SE2021MP5

CPE2.3

External links

https://cert-portal.siemens.com/productcert/pdf/ssa-208356.pdf
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-09

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

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.

Is there known malware, which exploits this vulnerability?

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

2) Out-of-bounds write

EUVDB-ID: #VU54018