PT-2020-14639 · Siemens · Simatic S7-1500 Software Controller+1

Published 2020-12-14 · Updated 2020-12-18 · CVE-2020-15796

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions SIMATIC ET 200SP Open Controller (incl. SIPLUS variants) version V20.8 SIMATIC S7-1500 Software Controller version V20.8

Description A vulnerability has been identified in the web server of the affected products, which could allow a remote attacker to trigger a denial-of-service condition by sending a specially crafted HTTP request.

Recommendations For SIMATIC ET 200SP Open Controller (incl. SIPLUS variants) version V20.8, consider disabling the web server functionality until a patch is available. For SIMATIC S7-1500 Software Controller version V20.8, restrict access to the web server to minimize the risk of exploitation. As a temporary workaround, avoid using the affected web server functionality until the issue is resolved.

Fix

Weakness Enumeration

CWE-248

Related Identifiers

CVE-2020-15796

Affected Products

Simatic Et 200Sp Open Controller

Simatic S7-1500 Software Controller

References · 5

• https://cert-portal.siemens.com/productcert/pdf/ssa-700697.pdf · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-15796 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-15796 · Security Note
• https://t.me/cvenotify/7295 · Telegram Post
• https://t.me/cibsecurity/20780 · Telegram Post