CVE-2019-3930 : What You Need to Know

A stack buffer overflow vulnerability affects various devices, allowing remote attackers to execute arbitrary code with root privileges.

Understanding CVE-2019-3930

This CVE identifies a critical security issue in multiple devices that can be exploited by attackers to gain unauthorized access.

What is CVE-2019-3930?

The vulnerability in the PARSERtoCHAR function of libAwgCgi.so allows remote, unauthenticated attackers to execute arbitrary code with root privileges by sending a specially crafted request to the return.cgi endpoint.

The Impact of CVE-2019-3930

The vulnerability poses a significant risk as it enables attackers to take control of affected devices remotely without authentication, potentially leading to unauthorized access and data breaches.

Technical Details of CVE-2019-3930

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The stack buffer overflow vulnerability in the PARSERtoCHAR function of libAwgCgi.so affects multiple devices, including Crestron AM-100, Crestron AM-101, Barco wePresent WiPG-1000P, Barco wePresent WiPG-1600W, Extron ShareLink 200/250, Teq AV IT WIPS710, SHARP PN-L703WA, Optoma WPS-Pro, Blackbox HD WPS, InFocus LiteShow3, and InFocus LiteShow4.

Affected Systems and Versions

Crestron AM-100 firmware 1.6.0.2
Crestron AM-101 firmware 2.7.0.1
Barco wePresent WiPG-1000P firmware 2.3.0.10
Barco wePresent WiPG-1600W before firmware 2.4.1.19
Extron ShareLink 200/250 firmware 2.0.3.4
Teq AV IT WIPS710 firmware 1.1.0.7
SHARP PN-L703WA firmware 1.4.2.3
Optoma WPS-Pro firmware 1.0.0.5
Blackbox HD WPS firmware 1.0.0.5
InFocus LiteShow3 firmware 1.0.16
InFocus LiteShow4 firmware 2.0.0.7

Exploitation Mechanism

The vulnerability can be exploited by sending a specially crafted request to the return.cgi endpoint, allowing attackers to execute arbitrary code with root privileges.

Mitigation and Prevention

Protecting systems from CVE-2019-3930 is crucial to prevent unauthorized access and potential security breaches.

Immediate Steps to Take

Apply security patches provided by the respective vendors promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all software and firmware to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and mitigate potential risks.
Educate users and administrators about security best practices to enhance overall cybersecurity posture.

Patching and Updates

Vendors have released patches to address the vulnerability; ensure all affected devices are updated with the latest firmware versions.