Description
An improper input validation discovered in Avaya Call Management System could allow an unauthorized remote command via a specially crafted web request. Affected versions include 18.x, 19.x prior to 19.2.0.7, and 20.x prior to 20.0.1.0.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-17628
1. Vulnerability Assessment and Severity Evaluation
The vulnerability described in EUVD-2025-17628 pertains to an improper input validation issue in the Avaya Call Management System. This flaw allows an unauthorized remote command execution via a specially crafted web request. The severity of this vulnerability is rated with a CVSS Base Score of 9.9, which is considered critical. The CVSS vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H indicates the following:
- Attack Vector (AV): Network (N) - The vulnerability is exploitable over the network.
- Attack Complexity (AC): Low (L) - The attack requires minimal skill and resources.
- Privileges Required (PR): Low (L) - The attacker needs low-level privileges to exploit the vulnerability.
- User Interaction (UI): None (N) - No user interaction is required for the attack to succeed.
- Scope (S): Changed (C) - The vulnerability affects a component that is outside the security scope of the vulnerable component.
- Confidentiality (C): High (H) - The vulnerability results in a high impact on confidentiality.
- Integrity (I): High (H) - The vulnerability results in a high impact on integrity.
- Availability (A): High (H) - The vulnerability results in a high impact on availability.
Given the high impact on confidentiality, integrity, and availability, this vulnerability poses a significant risk to organizations using the affected versions of the Avaya Call Management System.
2. Potential Attack Vectors and Exploitation Methods
The primary attack vector for this vulnerability is through a specially crafted web request. An attacker could exploit this vulnerability by:
- Sending Malicious Web Requests: Crafting and sending HTTP requests designed to bypass input validation mechanisms.
- Remote Command Execution: Executing arbitrary commands on the affected system, potentially leading to full system compromise.
- Lateral Movement: Using the compromised system as a pivot point to move laterally within the network, targeting other systems and data.
3. Affected Systems and Software Versions
The vulnerability affects the following versions of the Avaya Call Management System:
- 18.x: All versions
- 19.x: Versions prior to 19.2.0.7
- 20.x: Versions prior to 20.0.1.0
Organizations running these versions are at risk and should prioritize updating to the patched versions.
4. Recommended Mitigation Strategies
To mitigate the risk associated with this vulnerability, organizations should:
- Update Software: Immediately apply the latest patches provided by Avaya. The patched versions are 19.2.0.7 for 19.x and 20.0.1.0 for 20.x.
- Network Segmentation: Implement network segmentation to isolate critical systems and reduce the attack surface.
- Input Validation: Enhance input validation mechanisms on web applications and APIs to prevent malicious requests.
- Monitoring and Logging: Increase monitoring and logging of web requests to detect and respond to suspicious activities promptly.
- Access Controls: Implement strict access controls to limit the number of users with low-level privileges.
5. Impact on European Cybersecurity Landscape
The vulnerability in the Avaya Call Management System poses a significant threat to European organizations, particularly those in sectors reliant on telecommunications and call management systems, such as healthcare, finance, and government. The potential for remote command execution and the high impact on confidentiality, integrity, and availability make this a critical issue for European cybersecurity. Organizations must act swiftly to patch and mitigate this vulnerability to prevent potential breaches and data loss.
6. Technical Details for Security Professionals
For security professionals, the following technical details are pertinent:
- Detection: Implement intrusion detection systems (IDS) and intrusion prevention systems (IPS) to detect and block malicious web requests.
- Patch Management: Ensure a robust patch management process is in place to apply updates promptly.
- Incident Response: Prepare an incident response plan specific to this vulnerability, including steps for containment, eradication, and recovery.
- Security Awareness: Conduct security awareness training for IT staff to recognize and respond to potential exploitation attempts.
- Regular Audits: Perform regular security audits and vulnerability assessments to identify and address similar issues proactively.
By following these recommendations, organizations can significantly reduce the risk posed by this vulnerability and enhance their overall cybersecurity posture.
References
This comprehensive analysis should guide cybersecurity professionals in understanding and addressing the vulnerability described in EUVD-2025-17628 effectively.