#VU51372 Out-of-bounds write in Solid Edge SE2021 and Solid Edge SE2020 - CVE-2021-27380

Vulnerability identifier: #VU51372

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-2021-27380

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Solid Edge SE2021
Server applications / SCADA systems
Solid Edge SE2020
Server applications / SCADA systems

Vendor: Siemens

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when parsing PAR files. A remote attacker can 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 SE2021: SE2021MP3

Solid Edge SE2020: before SE2020MP13

---

External links
https://ics-cert.us-cert.gov/advisories/icsa-21-068-09
https://cert-portal.siemens.com/productcert/txt/ssa-574442.txt

---

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.