Vulnerability identifier: #VU57660

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-38413

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
V-Server Lite
Server applications / Web servers
Tellus Lite V-Simulator
Server applications / Other server solutions

Vendor:

Description

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

The vulnerability exists due to a boundary error within the parsing of V8 and X1 files in the V-Simulator module. A remote unauthenticated attacker can 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

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External links
http://ics-cert.us-cert.gov/advisories/icsa-21-299-01
http://www.zerodayinitiative.com/advisories/ZDI-21-1269/
http://www.zerodayinitiative.com/advisories/ZDI-21-1268/
http://www.zerodayinitiative.com/advisories/ZDI-21-1261/
http://www.zerodayinitiative.com/advisories/ZDI-21-1260/
http://www.zerodayinitiative.com/advisories/ZDI-21-1259/
http://www.zerodayinitiative.com/advisories/ZDI-21-1258/

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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.