CVE-2023-25355
Published: 04 April 2023
Summary
CVE-2023-25355 is a high-severity Incorrect Default Permissions (CWE-276) vulnerability in Coredial Sipxcom. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 6.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CoreDial sipXcom versions up to and including 21.04 contain an insecure permissions vulnerability tracked as CVE-2023-25355 and CWE-276. The flaw resides in service file handling and permits any user able to execute commands as the daemon account to overwrite files that control system services.
An attacker with daemon-level access on an affected sipXcom server can replace a service unit file and thereby escalate privileges to root, resulting in complete control of the host. The issue carries a CVSS 3.1 base score of 8.8 reflecting network-accessible exploitation with low attack complexity and no user interaction required.
The EPSS score remains flat at 0.1077 with no material increase after disclosure. Public references point to Full Disclosure list archives from March 2023 but supply no additional mitigation details within the provided data.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-29313
Vulnerability details
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`.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Access control policy can specify and enforce secure default permissions for resources.
Guides setting of default permissions to the minimum required level.
Establishes requirements for appropriate default permissions on system resources as part of configuration management.
Baseline establishment and updates on install/upgrade ensure correct default permissions rather than insecure ones.
Requiring the most restrictive settings instead of defaults prevents incorrect default permissions on resources.
Requires documented processes that include setting and maintaining correct default permissions for configuration items.
Requires addressing secure default permissions in physical and environmental protection controls.
Tailoring explicitly overrides or scopes default permission assignments in the baseline to match the system's actual risk and operational needs.