Overview
CVE-2025-37155 is a high-severity vulnerability affecting network management services that utilize a restricted SSH shell interface. This flaw allows an attacker with authenticated read-only access to escalate their privileges and gain full administrator access on the affected system. This can lead to complete compromise of the device and the network it is connected to.
Technical Details
The vulnerability lies within the improper access control mechanisms implemented in the SSH restricted shell. Specifically, the system fails to adequately restrict commands and functions available to read-only users through the SSH shell. By exploiting specific command sequences or leveraging unintended functionality within the restricted shell, an attacker can bypass the intended limitations and execute commands with elevated privileges, ultimately achieving root or administrator access.
The precise mechanism of exploitation may vary depending on the specific implementation of the network management services. However, the core issue revolves around the inadequate segregation of privileges within the SSH restricted shell environment.
CVSS Analysis
- CVE ID: CVE-2025-37155
- Published: 2025-11-18T19:15:47.170
- Severity: HIGH
- CVSS Score: 7.8
A CVSS score of 7.8 indicates a high-severity vulnerability. This score is justified due to the potential for complete system compromise arising from relatively simple exploitation by an authenticated user.
Possible Impact
The successful exploitation of CVE-2025-37155 can have severe consequences, including:
- Complete System Compromise: An attacker gains full control over the affected system.
- Data Breach: Sensitive data stored on the system can be accessed and exfiltrated.
- Denial of Service (DoS): The system can be rendered unavailable to legitimate users.
- Lateral Movement: The compromised system can be used as a launchpad to attack other systems on the network.
- Configuration Tampering: Critical system configurations can be altered, leading to further instability or security breaches.
Mitigation or Patch Steps
The primary mitigation step is to apply the patch or update provided by the vendor. Refer to the vendor’s advisory for specific instructions. In the interim, consider the following steps:
- Apply the vendor-supplied patch: This is the recommended and most effective solution.
- Restrict SSH Access: Limit SSH access to only trusted users and IP addresses.
- Monitor SSH Activity: Implement robust monitoring of SSH activity to detect suspicious behavior.
- Disable SSH if not needed: If the SSH interface is not essential, disable it entirely.
