High severity · published Sep 12, 2023
CVE-2023-28831
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…
7.5
CVSS
1.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
Simatic Cloud Connect 7 Cc712 Firmware · Siemens
before 2.2 · source: NVD
SC
Simatic Cloud Connect 7 Cc716 Firmware · Siemens
before 2.2 · source: NVD
SD
Simatic Drive Controller Cpu 1504d TF Firmware · Siemens
before 2.2 · source: NVD
SD
Simatic Drive Controller Cpu 1507d TF Firmware · Siemens
before 2.9.7 · source: NVD
SE
Simatic ET 200sp Open Controller Cpu Firmware · Siemens
before 2.9.7 · source: NVD
SS
Simatic S7-1200 Cpu Firmware · Siemens
before 3.0.3 · source: NVD
SS
Simatic S7-1500 Cpu 1510sp F-1 PN Firmware · Siemens
before 3.0.3 · source: NVD
SS
Simatic S7-1500 Cpu 1510sp-1 PN Firmware · Siemens
before 2.9.7 · source: NVD
SS
Simatic S7-1500 Cpu 1511-1 PN Firmware · Siemens
before 21.9.7 · source: NVD
SS
Simatic S7-1500 Cpu 1511c-1 PN Firmware · Siemens
before 30.0.0 · source: NVD
SS
Simatic S7-1500 Cpu 1511f-1 PN Firmware · Siemens
before 2.9.7 · source: NVD
SS
Simatic S7-1500 Cpu 1511t-1 PN Firmware · Siemens
before 2.9.7 · source: NVD
Affected product
SC
Simatic Cloud Connect 7 Cc712 Firmware
Siemens
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-28831
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-28831
Mitigation
https://cert-portal.siemens.com/productcert/html/ssa-118850.html
Mitigation
https://cert-portal.siemens.com/productcert/html/ssa-711309.html
Mitigation
https://cert-portal.siemens.com/productcert/pdf/ssa-118850.pdf
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-711309.pdf