SB2018070501 - Multiple vulnerabilities in Siemens SICLOCK TC
Published: July 5, 2018
Security Bulletin ID
SB2018070501
Severity
High
Patch available
NO
Number of vulnerabilities
6
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 secuirty vulnerabilities.
1) Improper input validation (CVE-ID: CVE-2018-4851)
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to insufficient validation of user-supplied input. A remote attacker can send certain packets and cause the device to reboot.
2) Authentication bypass (CVE-ID: CVE-2018-4852)
The vulnerability allows a remote attacker to bypass authentication on the target system.
The weakness exists due to unspecified flaw. A remote attacker who is able to obtain certain knowledge specific to the attacked device, can circumvent the authentication mechanism to read and modify the device configuration.
3) Privilege escalation (CVE-ID: CVE-2018-4853)
The vulnerability allows a remote attacker to gain elevated privileges on the target system.
The weakness exists due to unspecified flaw. A remote attacker with network access to port 69/udp, can modify the firmware and run his own code on the device.
4) Privilege escalation (CVE-ID: CVE-2018-4854)
The vulnerability allows a remote attacker to gain elevated privileges on the target system.
The weakness exists due to unspecified flaw. A remote attacker with network access to port 69/udp, can download and execute the modified client from the affected device and execute arbitrary code with elevated privileges.
5) Man-in-the-middle attack (CVE-ID: CVE-2018-4855)
The vulnerability allows a remote attacker to conduct man-in the-middle attack on the target system.
The weakness exists due to unencrypted storage of passwords in the client configuration files. A remote attacker in a privileged position, can intercept the communication between the affected device and the administrative client and obtain access passwords during network transmission.
6) Security restrictions bypass (CVE-ID: CVE-2018-4856)
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to unspecified flaw. A remote attacker with administrative access to the device’s management interface, can lock out legitimate users.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.