APT Package Vulnerability: Denial of Service Risk in Ubuntu 14.04
Summary
USN-4667-2: apt vulnerability. Affects apt versions < 1.0.1ubuntu2.24+esm3. Fixed in 1.0.1ubuntu2.24+esm3. How to fix ↓
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Background
The APT (Advanced Package Tool) is a package management system used by Ubuntu and other Debian-based distributions to handle the installation, upgrade, and removal of software packages. It simplifies the process of managing software dependencies and ensures that users can easily install and maintain software on their systems. However, a vulnerability was discovered that could lead to a denial of service, affecting the reliability of the package management process in Ubuntu 14.04.
Vulnerability Detail
The vulnerability, identified as CVE-2020-27350, was discovered by Kevin Backhouse. It arises from APT's improper handling of certain packages, which could allow a local attacker to exploit this flaw. The potential ramifications include causing APT to crash or become unresponsive, leading to a denial of service. This could disrupt the user's ability to install or update software, posing a significant risk to system stability and security.
How To Fix
Minimum fixed version
1.0.1ubuntu2.24+esm3
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 workaround, users can avoid using APT for package management until the update is applied. However, this is not a long-term solution, and users are encouraged to update as soon as possible.
Conclusion
In summary, the APT vulnerability identified as CVE-2020-27350 poses a significant risk to users of Ubuntu 14.04 by potentially causing denial of service. It is crucial for users to update to the patched version to ensure system stability and security.
See every vulnerability recorded for apt →
FAQ
The vulnerability allows a local attacker to cause APT to crash or stop responding, resulting in a denial of service.
You can check if your application is affected by using the Vulert playground at Vulert Scanner, which monitors open-source vulnerabilities.
If you cannot update immediately, consider using alternative methods for package management, but be aware that this is not a permanent solution.
While the primary risk is a denial of service, it is advisable to back up important data regularly to mitigate any potential issues.
More information can be found in the original advisory details at the Ubuntu Security Notices page.
References
Related vulnerabilities
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