CVE-2021-31893

Published: Jul 13, 2021Updated: Nov 21, 2024 Sources: CVE List NVD csafCWE-120

7.8HIGH

NVD MITRE

Description

A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2). The affected software contains a buffer overflow vulnerability while handling certain files that could allow a local attacker to trigger a denial-of-service condition or potentially lead to remote code execution.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-120

Affected Products

Siemens

commercial·DEaka siemens ag

simatic step 7 firmware

ICS / OT / IoT

sinamics starter firmware

ICS / OT / IoT

SIMATIC PCS 7 V8.2 and earlier

and 1 more affected products View all →

Exploitability

Official Patch Available

Workaround Available

Is your org exposed to CVE-2021-31893?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/pdf/ssa-641963.pdf

cert-portal.siemens.com

https://cert-portal.siemens.com/productcert/csaf/ssa-641963.json

cert-portal.siemens.com

https://cert-portal.siemens.com/productcert/txt/ssa-641963.txt

cert-portal.siemens.com

and 12 more references View all →

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