APT Package Vulnerability: Man-in-the-Middle Attack Bypass
Summary
CVE-2016-1252: The apt package in Debian jessie before 1.0.9.8.4, in Debian unstable before 1.4~beta2, in Ubuntu 14.04 LTS before 1.0.1ubuntu2.17, in Ubuntu 16.04 LTS before 1.2.15ubuntu0.2, and in Ubuntu 16.10 before 1.3.2ubuntu0.1 al... Affects apt versions < 1.4~beta2. Fixed in 1.4~beta2. How to fix ↓
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Background
The APT (Advanced Package Tool) is a package management system used by Debian and Ubuntu-based distributions. It simplifies the process of managing software packages, allowing users to install, update, and remove software easily. The APT package is crucial for maintaining system integrity and security, as it ensures that software is obtained from trusted sources. However, a vulnerability in certain versions of APT allows attackers to bypass repository-signing protections, potentially compromising the integrity of software installations.
Vulnerability Detail
The vulnerability, identified as CVE-2016-1252, arises from improper error handling when validating InRelease file signatures in the APT package. This flaw allows man-in-the-middle attackers to intercept and manipulate the communication between the user and the software repository. If exploited, this vulnerability could lead to the installation of malicious software, undermining the security of the system. The affected versions include Debian jessie before 1.0.9.8.4, Debian unstable before 1.4~beta2, Ubuntu 14.04 LTS before 1.0.1ubuntu2.17, Ubuntu 16.04 LTS before 1.2.15ubuntu0.2, and Ubuntu 16.10 before 1.3.2ubuntu0.1.
How To Fix
Minimum fixed version
1.4~beta2
This is the first release that contains the fix.
sudo apt-get install --only-upgrade aptTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can avoid using APT for package management until the package is updated. Alternatively, users can manually verify the signatures of the packages they are installing to ensure they are from trusted sources.
Conclusion
The CVE-2016-1252 vulnerability in the APT package poses a significant risk by allowing man-in-the-middle attacks that can compromise software integrity. Users are strongly advised to update their APT packages to secure versions to mitigate this risk. Regular monitoring for vulnerabilities using tools like Vulert can help maintain system security.
See every vulnerability recorded for apt →
FAQ
CVE-2016-1252 is a vulnerability in the APT package that allows man-in-the-middle attackers to bypass repository-signing protections.
Affected versions include Debian jessie before 1.0.9.8.4, Debian unstable before 1.4~beta2, Ubuntu 14.04 LTS before 1.0.1ubuntu2.17, Ubuntu 16.04 LTS before 1.2.15ubuntu0.2, and Ubuntu 16.10 before 1.3.2ubuntu0.1.
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If exploited, this vulnerability could lead to the installation of malicious software, compromising the security and integrity of the system.
The CVSS score of this vulnerability is 5.9, indicating a moderate level of severity.
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