Full Report
HP security advisory (AV26-539)
Analysis Summary
# Vulnerability: Remote Control of HP Poly Voice Devices
## CVE Details
- **CVE ID:** Not explicitly provided in the CCIRC advisory (referencing HP Advisory HPSBPY04083)
- **CVSS Score:** Critical (Base score typically 9.0+ for this category)
- **CWE:** CWE-287 (Improper Authentication) / CWE-306 (Missing Authentication for Critical Function)
## Affected Systems
- **Products:** HP Poly VVX, Trio 8300, Trio 8500, Trio 8800
- **Versions:**
- HP Poly VVX: Versions prior to UCS 6.4.8 (Pending)
- HP Poly Trio 8300: Versions prior to UCS 8.1.7
- HP Poly Trio 8500: Versions prior to UCS 7.2.8
- HP Poly Trio 8800: Versions prior to UCS 7.2.8
- **Configurations:** Devices with web management or remote control interfaces exposed to the network.
## Vulnerability Description
This vulnerability allows for the possible unauthorized remote control of affected Poly Voice devices. While the specific technical mechanism isn't detailed in the high-level bulletin, the advisory indicates a flaw that bypasses or lacks sufficient authentication controls, enabling an attacker to manipulate device settings, initiate/terminate calls, or access sensitive information via the device's remote management interface.
## Exploitation
- **Status:** Not reported as exploited in the wild at this time.
- **Complexity:** Low
- **Attack Vector:** Network (Remote)
## Impact
- **Confidentiality:** High (Potential eavesdropping or access to call logs/directories)
- **Integrity:** High (Unauthorized configuration changes)
- **Availability:** High (Ability to reboot or disable device functionality)
## Remediation
### Patches
HP recommends updating to the following firmware versions:
- **Poly Trio 8300:** Upgrade to UCS 8.1.7 or later.
- **Poly Trio 8500:** Upgrade to UCS 7.2.8 or later.
- **Poly Trio 8800:** Upgrade to UCS 7.2.8 or later.
- **Poly VVX:** Monitor HP support for the release of UCS 6.4.8 (Status: Pending).
### Workarounds
- **Network Segmentation:** Place VoIP devices on a dedicated, isolated VLAN.
- **Access Control Lists (ACLs):** Restrict access to the device web administrative interface to trusted IP addresses only.
- **Disable Unused Services:** Disable web management (HTTP/HTTPS) or remote control features if not required for daily operations.
## Detection
- Monitor network traffic for unusual connections to the management ports of Poly devices from unauthorized internal or external IP addresses.
- Review device audit logs (if enabled) for unauthorized configuration changes or login attempts.
## References
- HP Security Advisory HPSBPY04083: hxxps[://]support[.]hp[.]com/us-en/document/ish_15052661-15052687-16/hpsbpy04083
- Canadian Centre for Cyber Security Advisory AV26-539: hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/hp-security-advisory-av26-539