CVE-2024-28722:Cross Site Scripting vulnerability in Innovaphone myPBX versions 12r2, 13r3, and 14r1 that allows a remote attacker to execute arbitrary code via the query parameter to the /CMD0/xml_modes.xml endpoint.

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CVE-2024-28722 is a CWE-79 Cross-Site Scripting flaw in Innovaphone myPBX affecting v12r2, v13r3, and v14r1. An attacker can supply crafted input as a query parameter to the /CMD0/xml_modes.xml endpoint, which may be reflected in the web interface and could lead to arbitrary code execution within the context of the device’s UI. The issue is rated with CVSS v3.1 base score 6.3 (Medium) and is described as having network attack potential with user interaction required, low impact on confidentiality, integrity, and availability, and low attack complexity. The root cause is improper neutralization of input during web page generation (XSS). This vulnerability can enable exploitation by remote adversaries who can reach the device’s web interface and induce the target to process malicious content.

Overview

Innovaphone myPBX contains a Cross-Site Scripting vulnerability in certain releases (12r2, 13r3, 14r1) where unsanitized input passed to the /CMD0/xml_modes.xml endpoint can be exploited through a crafted query parameter. This can allow an attacker to run arbitrary script in the browser context of the device’s web UI, potentially aiding broader compromise. The CVE is assigned as CVE-2024-28722 with a CVSS v3.1 base score of 6.3 (Medium), indicating network-based exposure that requires user interaction and has low impact to confidentiality, integrity, and availability. Affected versions are explicitly listed as v12r2, v13r3, and v14r1, and the issue is associated with improper input handling (CWE-79).

Remediation

  • Upgrade to the latest firmware/release from Innovaphone that contains the XSL/XSS fix referenced in the release notes (look for the firmware note “Advanced UI: Prevent XSL injection,” often tied to a version after the affected ones).
  • If upgrading is not possible, apply mitigations:
    • Restrict or block access to the /CMD0/xml_modes.xml endpoint from untrusted networks (e.g., require VPN or a dedicated management network).
    • Implement strong input validation and proper encoding for any data incorporated into the web UI or XML transformations to prevent XSL injection.
    • Deploy a Web Application Firewall (WAF) or IDS/IPS rules to detect and block XSS/XSL injection patterns targeting the endpoint.
    • Review and harden XML/XSL processing paths on the device; minimize or sanitize any dynamic XML/XSL transformations.
    • Enforce network segmentation for management interfaces, rotate credentials, and monitor logs for suspicious activity related to the endpoint.
  • After remediation, validate by testing with representative payloads to ensure no reflected scripts are executed and monitor for any exploitation attempts.

References

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Accommodation & Food Services: Low
    Accommodation & Food Services
  2. Administrative, Support, Waste Management & Remediation Services: Low
    Administrative, Support, Waste Management & Remediation Services
  3. Agriculture, Forestry Fishing & Hunting: Low
    Agriculture, Forestry Fishing & Hunting
  4. Arts, Entertainment & Recreation: Low
    Arts, Entertainment & Recreation
  5. Construction: Low
    Construction
  6. Educational Services: Low
    Educational Services
  7. Finance and Insurance: Low
    Finance and Insurance
  8. Health Care & Social Assistance: Low
    Health Care & Social Assistance
  9. Information: Low
    Information
  10. Management of Companies & Enterprises: Low
    Management of Companies & Enterprises
  11. Manufacturing: Low
    Manufacturing
  12. Mining: Low
    Mining
  13. Other Services (except Public Administration): Low
    Other Services (except Public Administration)
  14. Professional, Scientific, & Technical Services: Low
    Professional, Scientific, & Technical Services
  15. Public Administration: Low
    Public Administration
  16. Real Estate Rental & Leasing: Low
    Real Estate Rental & Leasing
  17. Retail Trade: Low
    Retail Trade
  18. Transportation & Warehousing: Low
    Transportation & Warehousing
  19. Utilities: Low
    Utilities
  20. Wholesale Trade: Low
    Wholesale Trade

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  1. See Everything.
  2. Identify True Risk.
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