CVE-2024-22772: Hitron DVR Auth Bypass Vulnerability

CVE-2024-22772 Overview

CVE-2024-22772 affects Hitron Systems DVR LGUVR-8H firmware versions 1.02 through 4.02. The vulnerability stems from improper input validation [CWE-20] combined with the use of hard-coded credentials [CWE-798]. Attackers can leverage the default administrator ID and password to launch network-based attacks against affected devices. The flaw is exploitable remotely over the network without authentication or user interaction. Successful exploitation impacts device availability, allowing attackers to disrupt video surveillance operations on vulnerable LGUVR-8H DVR units.

Critical Impact
Remote, unauthenticated attackers can abuse default admin credentials on Hitron LGUVR-8H DVRs to cause availability loss across deployed surveillance systems.

Affected Products

Hitron Systems LGUVR-8H DVR (hardware)
Hitron Systems LGUVR-8H firmware versions 1.02 through 4.02
Surveillance deployments using default administrator credentials on LGUVR-8H units

Discovery Timeline

2024-01-23 - CVE-2024-22772 published to the National Vulnerability Database
2025-12-31 - Last updated in NVD database

Technical Details for CVE-2024-22772

Vulnerability Analysis

The LGUVR-8H DVR ships with a default administrator account and accepts network input without sufficient validation. An attacker reaching the device over the network can authenticate using the unchanged default credentials and trigger conditions that disrupt service availability. The issue maps to two weaknesses: improper input validation [CWE-20] and use of hard-coded credentials [CWE-798]. Together these weaknesses lower the barrier to remote exploitation. The EPSS probability is 0.218% at the 44.473 percentile, indicating modest but non-trivial exploitation likelihood. Confidentiality and integrity are not directly impacted, but availability loss can interrupt continuous video recording and monitoring workflows.

Root Cause

The device firmware accepts and processes network-supplied data without enforcing strict validation on input boundaries or session state. Combined with shipped default administrator credentials that operators frequently leave in place, the device exposes privileged functionality to any reachable attacker. Hard-coded or default credentials in embedded firmware [CWE-798] are a recurring weakness class in IoT and surveillance devices.

Attack Vector

Exploitation occurs over the network and requires no privileges or user interaction. An attacker who can reach the DVR management interface authenticates with the default admin ID and password, then submits crafted input that the firmware fails to validate. The resulting condition causes a denial-of-service state on the DVR. Devices exposed to the internet through port forwarding, UPnP, or direct WAN connections are the most likely targets. No public proof-of-concept exploit, ExploitDB entry, or CISA KEV listing is associated with this CVE at the time of writing.

No verified public exploit code is available. Refer to the Hitron Firmware Release Page for vendor guidance.

Detection Methods for CVE-2024-22772

Indicators of Compromise

Successful administrator logins to LGUVR-8H web or management interfaces from unexpected external IP addresses.
Repeated authentication attempts against DVR management ports using known default credential pairs.
Unexpected DVR reboots, service restarts, or loss of recording continuity in surveillance logs.
Outbound connections from DVR units to addresses not associated with vendor update or NTP services.

Detection Strategies

Inventory all Hitron LGUVR-8H devices and confirm firmware version against the affected range 1.02–4.02.
Audit network flows for inbound traffic to DVR management ports from outside trusted management subnets.
Correlate authentication logs with source IP geolocation to identify logins using default credentials from untrusted networks.

Monitoring Recommendations

Alert on any successful login using the vendor default admin account name on DVR endpoints.
Track availability metrics, including ping loss and RTSP stream interruptions, on each LGUVR-8H unit.
Forward DVR syslog data to a centralized logging platform for retention and correlation with network telemetry.

How to Mitigate CVE-2024-22772

Immediate Actions Required

Change the default administrator ID and password on every LGUVR-8H device to a unique, strong credential.
Block inbound internet access to DVR management interfaces and restrict access to a dedicated management VLAN.
Apply the latest firmware available from the Hitron Firmware Release Page.
Disable UPnP and remove any port-forwarding rules that expose the DVR to the public internet.

Patch Information

Hitron Systems publishes firmware updates through its official firmware portal. Administrators should download the latest LGUVR-8H firmware from the Hitron Firmware Release Page and verify that the installed version is above the affected 1.02–4.02 range before returning the device to production.

Workarounds

Place LGUVR-8H DVRs behind a firewall and restrict management access to specific administrator IP addresses.
Require VPN connectivity for any remote administration of DVR equipment.
Rotate DVR administrator credentials on a defined schedule and audit accounts for unauthorized additions.
Segment surveillance infrastructure from general corporate and guest networks to limit lateral exposure.

bash

# Configuration example: restrict DVR management access at the network edge
# Replace <DVR_IP> and <ADMIN_SUBNET> with values from your environment
iptables -A FORWARD -p tcp -s <ADMIN_SUBNET> -d <DVR_IP> --dport 80 -j ACCEPT
iptables -A FORWARD -p tcp -d <DVR_IP> --dport 80 -j DROP
iptables -A FORWARD -p tcp -d <DVR_IP> --dport 443 -j DROP