Multiple vulnerabilities in Siemens OPC UA
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2024-42513 CVE-2024-42512 |
| CWE-ID | CWE-305 CWE-208 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software |
SINUMERIK Edge Server applications / SCADA systems SIMATIC IPC DiagMonitor Server applications / SCADA systems SIMATIC WinCC Unified Server applications / SCADA systems SIMATIC BRAUMAT Other software / Other software solutions SIMATIC Energy Manager PRO Other software / Other software solutions SIMATIC SISTAR Other software / Other software solutions Totally Integrated Automation Portal (TIA Portal) Other software / Other software solutions SIMATIC WinCC Hardware solutions / Firmware SIMIT Simulation Platform Hardware solutions / Firmware |
| Vendor | Siemens |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Authentication Bypass by Primary Weakness
EUVDB-ID: #VU105635
Risk: High
CVSSv4.0: 8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2024-42513
CWE-ID:
CWE-305 - Authentication Bypass by Primary Weakness
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to insufficient access control in the OPC UA .NET Standard Stack. A remote attacker can bypass application authentication when using HTTPS endpoints.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSINUMERIK Edge: All versions
SIMATIC BRAUMAT: 8.0 SP1
SIMATIC Energy Manager PRO: 7.2 Update 6 - 7.5
SIMATIC IPC DiagMonitor: All versions
SIMATIC SISTAR: 8.0 SP1
Totally Integrated Automation Portal (TIA Portal): 18 - 19
SIMATIC WinCC: before 8.0 Update 3
SIMATIC WinCC Unified: before 19 Update 4
CPE2.3- cpe:2.3:a:siemens:sinumerik_edge:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_braumat:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_braumat:8.0:SP1:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_energy_manager_pro:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_energy_manager_pro:7.2:Update 6:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_energy_manager_pro:7.5:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_ipc_diagmonitor:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_sistar:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_sistar:8.0:SP1:*:*:*:*:*:*
- cpe:2.3:a:siemens:totally_integrated_automation_portal_tia_portal:18:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_wincc:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_wincc_unified:*:*:*:*:*:*:*:*
https://cert-portal.siemens.com/productcert/txt/ssa-858251.txt
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Information Exposure Through Timing Discrepancy
EUVDB-ID: #VU105636
Risk: High
CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Amber]
CVE-ID: CVE-2024-42512
CWE-ID:
CWE-208 - Information Exposure Through Timing Discrepancy
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the an exploitable timing discrepancy issue in the OPC UA .NET Standard Stack. A remote attacker can bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSIMATIC Energy Manager PRO: 7.2 Update 6 - 7.5
SIMIT Simulation Platform: All versions
Totally Integrated Automation Portal (TIA Portal): 19
CPE2.3- cpe:2.3:a:siemens:simatic_energy_manager_pro:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_energy_manager_pro:7.2:Update 6:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_energy_manager_pro:7.5:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simit_simulation_platform:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:totally_integrated_automation_portal_tia_portal:19:*:*:*:*:*:*:*
https://cert-portal.siemens.com/productcert/txt/ssa-858251.txt
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
