Privilege escalation in TeleControl Server Basic - CVE-2018-4836
Published: February 1, 2018
Vulnerability identifier: #VU10353
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-4836
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Siemens
Affected software:
TeleControl Server Basic
TeleControl Server Basic
Detailed vulnerability description
The vulnerability allows a remote attacker to gain elevated privileges on the target system.
The weakness exists due to improper access and privileges controls. A remote attacker with network access to Port 8000/TCP can escalate his privileges and perform administrative operations.
The weakness exists due to improper access and privileges controls. A remote attacker with network access to Port 8000/TCP can escalate his privileges and perform administrative operations.
How to mitigate CVE-2018-4836
Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk:
• If TeleControl Server Basic is operated in standalone mode, then customers can close port 8000/tcp on the Windows firewall.
• If Telecontrol Server Basic is operated in redundancy mode, then customers can use the Windows firewall to restrict access to port 8000/tcp to the second Telecontrol Server Basics’ IP address.
• If TeleControl Server Basic is operated in standalone mode, then customers can close port 8000/tcp on the Windows firewall.
• If Telecontrol Server Basic is operated in redundancy mode, then customers can use the Windows firewall to restrict access to port 8000/tcp to the second Telecontrol Server Basics’ IP address.