CVE-2017-20006 Explained : Impact and Mitigation
Learn about CVE-2017-20006 affecting UnRAR versions 5.6.1.2 and 5.6.1.3. Discover the impact, affected systems, exploitation mechanism, and mitigation steps.
UnRAR versions 5.6.1.2 and 5.6.1.3 have a buffer overflow vulnerability in the Unpack::CopyString function, which is accessed from Unpack::Unpack5 and CmdExtract::ExtractCurrentFile.
Understanding CVE-2017-20006
What is CVE-2017-20006?
UnRAR 5.6.1.2 and 5.6.1.3 have a heap-based buffer overflow in Unpack::CopyString, leading to a security vulnerability.
The Impact of CVE-2017-20006
This vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by exploiting the buffer overflow.
Technical Details of CVE-2017-20006
Vulnerability Description
The UnRAR versions 5.6.1.2 and 5.6.1.3 contain a heap-based buffer overflow in the Unpack::CopyString function.
Affected Systems and Versions
- Product: UnRAR
- Vendor: n/a
- Versions: 5.6.1.2 and 5.6.1.3
Exploitation Mechanism
The vulnerability is exploited through the Unpack::CopyString function, which is accessed from Unpack::Unpack5 and CmdExtract::ExtractCurrentFile.
Mitigation and Prevention
Immediate Steps to Take
- Update UnRAR to a patched version if available.
- Avoid opening untrusted RAR files.
- Implement file integrity checks.
Long-Term Security Practices
- Regularly update software and apply security patches.
- Conduct security audits and code reviews.
Patching and Updates
Ensure that you regularly check for updates and apply patches provided by the UnRAR developers.