CVE-2019-5994 : Exploit Details and Defense Strategies

EOS series digital cameras and PowerShot models by Canon, Inc. are vulnerable to a PTP buffer overflow, allowing attackers on the same network segment to disrupt or take control of the devices.

Understanding CVE-2019-5994

This CVE identifies a critical vulnerability in Canon digital cameras that can be exploited by attackers connected to the same network segment.

What is CVE-2019-5994?

The vulnerability lies in the Picture Transfer Protocol (PTP) of various Canon camera models, enabling attackers to execute unauthorized code or render the devices unresponsive using the SendObjectInfo command.

The Impact of CVE-2019-5994

The vulnerability poses a severe security risk as it allows attackers to compromise the affected cameras, potentially leading to unauthorized access or disruption of camera functionality.

Technical Details of CVE-2019-5994

Canon cameras are affected by a buffer overflow in the PTP, impacting a wide range of EOS series digital cameras and PowerShot models.

Vulnerability Description

The buffer overflow in the PTP of Canon cameras allows attackers on the same network segment to trigger unresponsiveness or execute arbitrary code on the affected devices.

Affected Systems and Versions

EOS series digital cameras (e.g., EOS-1D X, EOS 5D MARK IV) with specific firmware versions
PowerShot SX740 HS, PowerShot SX70 HS, and PowerShot G5Xmark II

Exploitation Mechanism

Attackers exploit the vulnerability by utilizing the SendObjectInfo command to disrupt camera operations or inject malicious code.

Mitigation and Prevention

To address CVE-2019-5994, users should take immediate action and implement long-term security measures.

Immediate Steps to Take

Disable network connectivity on the affected cameras if not required
Regularly check for firmware updates from Canon

Long-Term Security Practices

Segment network to isolate cameras from potentially malicious actors
Implement strong network access controls and monitoring mechanisms

Patching and Updates

Apply firmware updates provided by Canon to mitigate the vulnerability and enhance camera security