#VU53210 Stack-based buffer overflow in Solid Edge Viewer - CVE-2021-27494

Vulnerability identifier: #VU53210

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/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-2021-27494

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Solid Edge Viewer
Client/Desktop applications / Other client software

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 when parsing the STP files. A remote unauthenticated attacker can trick a victim to open a specially crafted file or visit a malicious website, 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
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Solid Edge Viewer: All versions

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External links
https://www.zerodayinitiative.com/advisories/ZDI-21-564/
https://cert-portal.siemens.com/productcert/txt/ssa-119468.txt

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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.