Home/CVE/The OPC UA implementations (ANSI C and C++) in affected products contain an integer overflow vulnerability that could ca
CVE

CVE-2023-28831

The OPC UA implementations (ANSI C and C++) in affected products contain an integer overflow vulnerability that could ca

The OPC UA implementations (ANSI C and C++) in affected products contain an integer overflow vulnerability that could cause the application to run into an infinite loop during certificate validation. This could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate.

HIGH · CVSS 7.5 EPSS 0.00644
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-190Integer Overflow or Wraparound
CWE-190Integer Overflow or Wraparound
▤

Affected Products & Versions

60
siemens simatic cloud connect 7 cc712 firmware< 2.2
siemens simatic cloud connect 7 cc716 firmware< 2.2
siemens simatic drive controller cpu 1504d tf firmware< 2.2
siemens simatic drive controller cpu 1507d tf firmware< 2.9.7
siemens simatic et 200sp open controller cpu firmware< 2.9.7
siemens simatic s7-1200 cpu firmware< 3.0.3
siemens simatic s7-1500 cpu 1510sp-1 pn firmware< 2.9.7
siemens simatic s7-1500 cpu 1510sp f-1 pn firmware< 3.0.3
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · productcert@siemens.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Sep 2023 · 10:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

4
siemens-csafSSA-118850
siemens-csafSSA-711309
cisa-csafcisa-csaf-csaf_files-OT-white-2023-icsa-23-257-01
cisa-csafcisa-csaf-csaf_files-OT-white-2023-icsa-23-348-06
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert-portal.siemens.com/productcert/html/ssa-118850.htmlMitigationVendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-711309.htmlMitigationVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-118850.pdfMitigationVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-711309.pdfVendor Advisory
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities
Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs
Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures
Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1
About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service
threatengine.sh  ·  Open-source threat intelligence platform  ·  100+ authoritative sources  ·  Every fact traces to its origin