CVE-2023-25355 in sipXcom sipXopenfire
Summary
by MITRE • 04/04/2023
CoreDial sipXcom up to and including 21.04 is vulnerable to Insecure Permissions. A user who has the ability to run commands as the `daemon` user on a sipXcom server can overwrite a service file, and escalate their privileges to `root`.
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Analysis
by VulDB Data Team • 10/30/2025
The vulnerability identified as CVE-2023-25355 affects CoreDial sipXcom versions 21.04 and earlier, presenting a critical privilege escalation risk through insecure permissions. This vulnerability specifically targets the daemon user account which serves as a crucial system component in the sipXcom environment. The flaw allows authenticated attackers with daemon user privileges to manipulate service files and subsequently escalate their access level to root, creating a significant security breach vector within the system architecture.
The technical implementation of this vulnerability stems from improper file permission controls within the sipXcom service management framework. When a user can execute commands as the daemon user, they gain access to specific system service files that should normally be protected from modification by non-privileged accounts. This misconfiguration creates an attack surface where the daemon user, despite typically having limited privileges, can modify critical service configuration files. The vulnerability aligns with CWE-276, which addresses incorrect permissions for critical resources, and represents a classic privilege escalation flaw that enables attackers to move from a limited user account to full administrative control.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally compromises the security model of the sipXcom system. Attackers who can establish a foothold as the daemon user can leverage this vulnerability to gain complete system control, potentially leading to data exfiltration, system modification, or use as a pivot point for further attacks within the network infrastructure. The vulnerability affects telephony and communication systems that rely on sipXcom for voice over IP services, making it particularly concerning for organizations that depend on these platforms for business-critical communications. The attack vector requires minimal prerequisites since the daemon user account is typically accessible to legitimate system users, making this vulnerability particularly dangerous in environments where daemon user access is not properly restricted.
Mitigation strategies for CVE-2023-25355 should focus on implementing proper access controls and privilege separation mechanisms. Organizations should immediately update to sipXcom versions beyond 21.04 where this vulnerability has been addressed. System administrators should review and tighten permissions for service files, ensuring that only authorized accounts can modify critical system components. The implementation of principle of least privilege should be enforced, restricting daemon user capabilities to prevent modification of service files. Additionally, monitoring and logging of service file modifications should be enabled to detect potential exploitation attempts. This vulnerability demonstrates the importance of proper privilege management and access control as outlined in the MITRE ATT&CK framework under privilege escalation techniques, specifically targeting the use of service configuration files as attack vectors. Organizations should conduct comprehensive security audits of their sipXcom installations to identify and remediate similar permission issues across their telephony infrastructure.