CVE-2020-35112 : Vulnerability Insights and Analysis
Learn about CVE-2020-35112, a security flaw in Firefox, Thunderbird, and Firefox ESR versions that could lead to the unintended execution of executable files on Windows systems. Find out how to mitigate this vulnerability.
A vulnerability in Firefox, Thunderbird, and Firefox ESR versions that could lead to the unintended execution of executable files on Windows systems.
Understanding CVE-2020-35112
This CVE highlights a security issue in Mozilla products that could result in the inadvertent launching of executable files when opening extension-less downloads on Windows.
What is CVE-2020-35112?
If a user downloads a file without an extension on Windows and opens it from the downloads panel, there is a risk that an executable file with a similar name in the downloads directory could be launched instead. This vulnerability specifically impacts Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
The Impact of CVE-2020-35112
The vulnerability could potentially allow malicious actors to trick users into executing harmful files, leading to unauthorized actions on affected systems.
Technical Details of CVE-2020-35112
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The flaw allows for the unintended execution of executable files when opening extension-less downloads on Windows systems.
Affected Systems and Versions
- Firefox < 84
- Thunderbird < 78.6
- Firefox ESR < 78.6
Exploitation Mechanism
The vulnerability occurs when a user opens a file without an extension, triggering the launch of a similarly named executable file in the downloads directory on Windows.
Mitigation and Prevention
Steps to address and prevent the exploitation of CVE-2020-35112.
Immediate Steps to Take
- Avoid opening files without extensions from the downloads panel on Windows systems.
- Exercise caution when downloading and opening files from untrusted sources.
Long-Term Security Practices
- Regularly update Mozilla products to the latest versions to patch known vulnerabilities.
- Educate users on safe downloading practices and file handling procedures.
Patching and Updates
Ensure that Firefox, Thunderbird, and Firefox ESR are updated to versions that address the CVE-2020-35112 vulnerability.