NULL Pointer Dereference in GeoVision GV-LPC2011 and GV-LPC2211

Executive Summary

This vulnerability is an unauthenticated NULL pointer dereference in the IEEE8021x_upload.cgi component of GeoVision GV-LPC2011 and GV-LPC2211 devices running version 1.12 or earlier.

It occurs because the software improperly validates multipart upload headers when processing certificate-related upload fields.

A remote attacker can exploit this by sending a malformed multipart request, which causes the CGI process to crash.

This crash results in a denial of service condition.

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Detection Guidance

This vulnerability involves an unauthenticated NULL pointer dereference in the IEEE8021x_upload.cgi component of GeoVision GV-LPC2011 and GV-LPC2211 devices when processing malformed multipart upload requests. Detection would typically involve monitoring for crashes or denial of service symptoms on these devices after receiving suspicious multipart HTTP requests.

Since the vulnerability is triggered by malformed multipart upload headers targeting certificate-related upload fields, network detection could focus on identifying unusual or malformed HTTP multipart POST requests to the IEEE8021x_upload.cgi endpoint.

Specific commands or tools to detect this vulnerability are not provided in the available resources. However, general approaches could include using network traffic analysis tools like tcpdump or Wireshark to capture HTTP POST requests to the vulnerable CGI path and inspecting them for malformed multipart headers.

Additionally, monitoring device logs for crashes or service interruptions related to the CGI process may help identify exploitation attempts.

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Impact Analysis

The primary impact of this vulnerability is a denial of service (DoS) condition.

An attacker can remotely cause the affected CGI process to crash, potentially disrupting the normal operation of the GeoVision device.

Since the vulnerability does not affect confidentiality or integrity, the impact is limited to availability.

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Compliance Impact

This vulnerability causes a denial of service by crashing the affected CGI process through a NULL pointer dereference. It does not directly impact confidentiality, integrity, or availability of data beyond service availability.

Since the vulnerability results in denial of service without compromising data confidentiality or integrity, its impact on compliance with standards like GDPR or HIPAA is limited to potential availability concerns.

However, denial of service could affect availability requirements under these regulations if the affected systems are critical for processing or accessing personal or protected health information.

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Mitigation Strategies

To mitigate this vulnerability, it is important to apply any available firmware or software updates provided by GeoVision for the affected devices GV-LPC2011 and GV-LPC2211.

GeoVision follows a vulnerability management process that includes prompt updates for critical vulnerabilities such as this one, so checking their official cybersecurity page for patches or advisories is recommended.

Additionally, restricting network access to the affected devices and monitoring for unusual multipart upload requests may help reduce exposure until a fix is applied.

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