#VU60699 Stack-based buffer overflow in Simcenter Femap - CVE-2021-46699

Vulnerability identifier: #VU60699

Vulnerability 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-2021-46699

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Simcenter Femap
Server applications / SCADA systems

Vendor: Siemens

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error while parsing specially crafted BDF files. A remote unauthenticated attacker can trick a victim to open a specially crafted BDF file, trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Simcenter Femap: before 2022.1.1

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External links
https://cert-portal.siemens.com/productcert/txt/ssa-949188.txt
https://www.zerodayinitiative.com/advisories/ZDI-22-509/

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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.