SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

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 certificate validation.

HIGH 8.7EPSS 0.82%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.82%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 4.0
8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS
0.82% probability · 55th percentile
CISA KEV
Not listed
Weakness
CWE-190
Affected
siemens/simatic cloud connect 7 cc712 firmware · siemens/simatic cloud connect 7 cc716 firmware · siemens/simatic drive controller cpu 1504d tf firmware · siemens/simatic drive controller cpu 1507d tf firmware · siemens/simatic et 200sp open controller cpu firmware · siemens/simatic s7-1200 cpu firmware · siemens/simatic s7-1500 cpu 1510sp-1 pn firmware · siemens/simatic s7-1500 cpu 1510sp f-1 pn firmware · siemens/simatic s7-1500 cpu 1511-1 pn firmware · siemens/simatic s7-1500 cpu 1511c-1 pn firmware · siemens/simatic s7-1500 cpu 1511f-1 pn firmware · siemens/simatic s7-1500 cpu 1511t-1 pn firmware · siemens/simatic s7-1500 cpu 1511tf-1 pn firmware · siemens/simatic s7-1500 cpu 1512c-1 pn firmware · siemens/simatic s7-1500 cpu 1512sp-1 pn firmware · siemens/simatic s7-1500 cpu 1512sp f-1 pn firmware · siemens/simatic s7-1500 cpu 1513-1 pn firmware · siemens/simatic s7-1500 cpu 1513f-1 pn firmware · siemens/simatic s7-1500 cpu 1513r-1 pn firmware · siemens/simatic s7-1500 cpu 1514sp-2 pn firmware · +40 more
Source
productcert@siemens.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.