CVE-2019-3929 is a critical command injection vulnerability affecting multiple products from Crestron, including the AM-100 and AM-101 firmware versions, as well as various devices from Barco, Extron, Teq AV IT, SHARP, Optoma, Blackbox, and InFocus. With a CVSS score of 9.8, this vulnerability presents a severe risk as it allows a remote, unauthenticated attacker to execute operating system commands with root privileges via the file_transfer.cgi HTTP endpoint.
The exploitation of this vulnerability is alarming due to its ease of access. Attackers may leverage this flaw to gain full control over the affected devices, potentially leading to unauthorized access and manipulation of sensitive system operations. Organizations utilizing these products should prioritize patching to mitigate the threat.
Published on April 30, 2019, this vulnerability has been analyzed and documented extensively, confirming its critical nature. With the status of being actively exploited as noted in the Known Exploited Vulnerabilities catalog, immediate action is required from organizations using the affected devices.
Given the high exploitation potential, organizations are urged to apply necessary updates as per vendor instructions promptly. Failure to address this vulnerability could lead to significant operational disruptions.
Vulnerability Details
The 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, and InFocus LiteShow4 2.0.0.7 are vulnerable to command injection via the file_transfer.cgi HTTP endpoint.
The CVSS score of 9.8 indicates a critical severity level, reflecting the potential for high confidentiality, integrity, and availability impacts. The vulnerability allows attackers with no privileges or user interaction required to exploit the system over the network, making it a significant concern for all organizations using these products.
Technical Analysis
The root cause of CVE-2019-3929 lies in inadequate input validation for commands passed through the vulnerable HTTP endpoint. The attack vector is network-based, requiring low complexity to exploit. No special privileges are needed, and user interaction is not required, which increases the risk of widespread compromises. The potential impacts on confidentiality, integrity, and availability are rated as high, allowing for complete control over the affected systems.
Risk & Impact Analysis
Organizations are at significant risk due to the critical nature of this vulnerability. The blast radius could be extensive, impacting not only the devices directly affected but also the larger network ecosystem they reside within. The urgency of addressing CVE-2019-3929 is underscored by its inclusion in the Known Exploited Vulnerabilities catalog, which highlights its active exploitation in the wild.
Organizations should prioritize patching immediately to mitigate risks associated with this vulnerability. Failure to act could lead to unauthorized access, data breaches, and significant operational disruptions.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected versions include the 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, and InFocus LiteShow4 2.0.0.7.
Mitigation & Remediation
Organizations should prioritize patching immediately. Apply updates per vendor instructions to remediate this vulnerability effectively and ensure the security of the affected systems. For additional security, consider implementing network controls, configuration hardening, and continuous monitoring to detect and respond to potential exploitation attempts.
For more information on security testing and remediation strategies, organizations can explore resources like penetration testing methodology to enhance their security posture.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual activity related to the file_transfer.cgi HTTP endpoint. Behavioral anomalies, such as unexpected command executions or unauthorized access attempts, should be flagged for further investigation. Additionally, network signatures that correlate with known exploit patterns should be implemented to enhance detection capabilities.
AppSecure Threat Intelligence Insight
CVE-2019-3929 exemplifies the risk posed by command injection vulnerabilities in widely deployed devices. This incident highlights the importance of rigorous input validation and regular patching to protect against similar threats. Security teams should learn from this vulnerability to bolster their defenses and consider adopting a proactive stance on vulnerability management.
For further insights on vulnerability management, consider reviewing the following resources: vulnerability management program design and penetration testing compliance guide to strengthen your organization’s security posture.
As the landscape of vulnerabilities continues to evolve, it is imperative for organizations to stay informed and prepared to respond to emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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