CVE-2020-28949 : Exploit Details and Defense Strategies
Learn about CVE-2020-28949, a vulnerability in Archive_Tar allowing stream-wrapper attacks to overwrite files. Find mitigation steps and long-term security practices.
Archive_Tar through 1.4.10 is vulnerable to stream-wrapper attacks due to inadequate filename sanitization, potentially allowing malicious actors to overwrite files.
Understanding CVE-2020-28949
Archive_Tar through version 1.4.10 is susceptible to a specific type of attack that can lead to file overwriting.
What is CVE-2020-28949?
This CVE refers to a security vulnerability in Archive_Tar that allows attackers to execute stream-wrapper attacks, enabling them to overwrite files within the affected system.
The Impact of CVE-2020-28949
The vulnerability in Archive_Tar can be exploited by attackers to perform file overwriting attacks, potentially leading to unauthorized changes to critical files and data.
Technical Details of CVE-2020-28949
Archive_Tar through version 1.4.10 is affected by a vulnerability that can be exploited through stream-wrapper attacks.
Vulnerability Description
The issue in Archive_Tar lies in its inadequate filename sanitization, which fails to prevent certain stream-wrapper attacks, such as file overwriting using 'file://'.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: All versions up to and including 1.4.10
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting malicious file paths using stream-wrapper techniques, allowing them to overwrite files within the system.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-28949.
Immediate Steps to Take
- Update Archive_Tar to the latest version to patch the vulnerability.
- Implement file integrity monitoring to detect any unauthorized file modifications.
- Restrict access permissions to critical files to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly update software and libraries to address known vulnerabilities.
- Conduct security assessments and penetration testing to identify and remediate weaknesses in the system.
Patching and Updates
- Apply patches provided by the software vendor promptly to address security vulnerabilities and enhance system security.