CVE-2019-3948 : Security Advisory and Response
Learn about CVE-2019-3948, a security flaw in Dahua cameras allowing unauthorized access to audio streams via the /videotalk endpoint. Find mitigation steps and preventive measures here.
CVE-2019-3948 addresses a security vulnerability in various Dahua camera models where authentication is not required to access the /videotalk HTTP endpoint, potentially allowing unauthorized access to audio streams.
Understanding CVE-2019-3948
This CVE highlights a critical security issue in Dahua cameras that could compromise the privacy and security of audio data.
What is CVE-2019-3948?
The vulnerability in CVE-2019-3948 allows unauthenticated remote individuals to connect to the /videotalk endpoint and listen to audio captured by affected Dahua camera models.
The Impact of CVE-2019-3948
The security flaw poses a significant risk as it enables unauthorized access to audio streams without the need for authentication, potentially leading to privacy breaches and unauthorized surveillance.
Technical Details of CVE-2019-3948
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability lies in the lack of authentication requirements for accessing the /videotalk HTTP endpoint on affected Dahua camera models.
Affected Systems and Versions
- Dahua IPC-XXBXX V2.622.0000000.9.R
- Dahua IPC HX5X3X and HX4X3X V2.800.0000008.0.R
- Dahua DH-IPC HX883X and DH-IPC-HX863X V2.622.0000000.7.R
- Dahua DH-SD4XXXXX V2.623.0000000.7.R
- Dahua DH-SD5XXXXX V2.623.0000000.1.R
- Dahua DH-SD6XXXXX V2.640.0000000.2.R and V2.623.0000000.1.R
- Dahua NVR5XX-4KS2 V3.216.0000006.0.R
- Dahua NVR4XXX-4KS2 V3.216.0000006.0.R and NVR2XXX-4KS2
Exploitation Mechanism
Unauthorized individuals can exploit this vulnerability by connecting to the /videotalk endpoint without the need for authentication, potentially eavesdropping on audio streams.
Mitigation and Prevention
Protecting systems from CVE-2019-3948 is crucial to safeguard privacy and security.
Immediate Steps to Take
- Disable access to the /videotalk endpoint if not essential
- Implement strong authentication mechanisms
- Regularly monitor and audit access to sensitive endpoints
Long-Term Security Practices
- Keep camera firmware up to date
- Conduct regular security assessments and penetration testing
- Educate users on secure configuration practices
Patching and Updates
- Apply patches provided by Dahua to address the authentication vulnerability