CVE-2018-20225 : What You Need to Know
Learn about CVE-2018-20225, a vulnerability in pip that installs the highest package version, potentially leading to unintended installations from public indexes. Find mitigation steps and prevention measures here.
A problem was identified in pip (all versions) as it installs the highest version number of a package, even if the user intended to download a private package from a private index. This issue only occurs when the --extra-index-url option is used, and it can be exploited if the package is not already available in the public index. Some reports suggest this behavior is intentional, and users must use the --extra-index-url option securely.
Understanding CVE-2018-20225
This CVE involves a vulnerability in the pip package installer that can lead to unintended installations from public indexes.
What is CVE-2018-20225?
The vulnerability in pip allows the installation of the highest version of a package, even if the user intended to download a private package from a private index using the --extra-index-url option.
The Impact of CVE-2018-20225
- Attackers can place a package in the public index with any version number, potentially leading to unintended installations.
- Users may unknowingly install packages from public indexes instead of private ones.
Technical Details of CVE-2018-20225
This section provides more technical insights into the vulnerability.
Vulnerability Description
The issue in pip affects all versions and results in the installation of the highest version of a package, regardless of the user's intention.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: All versions of pip
Exploitation Mechanism
- Exploitation requires the use of the --extra-index-url option.
- Attackers can manipulate the public index to force the installation of a specific package version.
Mitigation and Prevention
Protecting systems from CVE-2018-20225 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Avoid using the --extra-index-url option unless necessary.
- Verify package sources before installation to prevent unintended downloads.
Long-Term Security Practices
- Regularly update pip to the latest version to mitigate known vulnerabilities.
- Implement secure coding practices to minimize the impact of potential package installation issues.
- Educate users on the risks associated with package installations from public indexes.
Patching and Updates
Stay informed about security updates for pip and apply patches promptly to address any known vulnerabilities.