PT-2021-21570 · Siemens · Sinumerik 808D+1

Published 2021-10-12 · Updated 2021-10-19 · CVE-2021-37199

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions SINUMERIK 808D (All versions) SINUMERIK 828D versions prior to V4.95

Description A vulnerability has been identified where affected devices do not process certain specially crafted packets sent to port 102/tcp correctly. This could allow an attacker to cause a denial-of-service in the device.

Recommendations For SINUMERIK 808D, at the moment, there is no information about a newer version that contains a fix for this vulnerability. For SINUMERIK 828D versions prior to V4.95, update to version V4.95 or later to resolve the issue. As a temporary workaround, consider restricting access to port 102/tcp to minimize the risk of exploitation.

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-787

Related Identifiers

CVE-2021-37199

Affected Products

Sinumerik 808D

Sinumerik 828D

References · 4

• https://cert-portal.siemens.com/productcert/pdf/ssa-178380.pdf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-37199 · Security Note
• https://osv.dev/vulnerability/CVE-2021-37199 · Vendor Advisory
• https://t.me/cibsecurity/30381 · Telegram Post