#VU56619 Out-of-bounds read in NX 1980 - CVE-2021-37203

Vulnerability identifier: #VU56619

Vulnerability risk: High

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-37203

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
NX 1980
Hardware solutions / Routers for home users

Vendor: Siemens

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a boundary condition in the plmxmlAdapterIFC.dll when parsing user supplied IFC files. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system or perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NX 1980: before 1984

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External links
https://cert-portal.siemens.com/productcert/pdf/ssa-208530.pdf

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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.