CVE-2020-7881 Explained : Impact and Mitigation
Learn about CVE-2020-7881, a high-severity vulnerability in AfreecaTV streamer service on Windows systems. Find out the impact, affected versions, and mitigation steps.
AfreecaTV streamer service stack-based buffer overflow vulnerability affecting Windows systems.
Understanding CVE-2020-7881
What is CVE-2020-7881?
The vulnerability arises in the AfreecaTV streamer service due to a stack-based buffer overflow during communication via web socket on port 21201, potentially leading to remote code execution.
The Impact of CVE-2020-7881
The vulnerability has a CVSS base score of 7.5, indicating a high severity issue with significant impacts on confidentiality, integrity, and availability.
Technical Details of CVE-2020-7881
Vulnerability Description
The vulnerability is caused by a stack-based buffer overflow in the strcpy() function due to inadequate validation of data length, specifically in the "FanTicket" field.
Affected Systems and Versions
- Affected Platforms: Windows
- Affected Product: afreecatvstreamer.exe
- Affected Version: 1.0.0.1 (<= 2020.06.15)
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-supplied patches promptly
- Monitor network traffic for any suspicious activities
- Restrict network access to vulnerable services
Long-Term Security Practices
- Implement secure coding practices to prevent buffer overflows
- Regularly update and patch software to address known vulnerabilities
Patching and Updates
Regularly check for security updates from AfreecaTV and apply them to ensure protection against known vulnerabilities.