Critical Buffer Overflow Vulnerability in CUPS Package
Summary
ALPINE-CVE-2019-8675: A buffer overflow issue was addressed with improved memory handling. Affects cups versions < 2.2.12-r0. Fixed in 2.2.12-r0. How to fix ↓
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Background
CUPS (Common Unix Printing System) is an open-source printing system for Unix-like operating systems that allows a computer to act as a print server. It provides a standard printing interface and supports various printer types. The CUPS package is widely used in many Linux distributions, including Alpine Linux. However, it has been found to have a critical buffer overflow vulnerability that could allow attackers to execute arbitrary code.
Vulnerability Detail
The vulnerability, identified as CVE-2019-8675, stems from improper memory handling within the CUPS package. An attacker with privileged access to the network could exploit this flaw to execute arbitrary code on the affected system. The severity of this vulnerability is rated at CVSS 8.8, indicating a high risk to systems running vulnerable versions of CUPS. This issue affects multiple versions of the package across various Alpine Linux releases.
How To Fix
Minimum fixed version
2.2.12-r0
This is the first release that contains the fix.
sudo apk add --upgrade cupsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, consider restricting network access to the CUPS service to trusted users only. This can be done by modifying the CUPS configuration file located at /etc/cups/cupsd.conf and setting the 'Listen' directive to a specific IP address or using firewall rules to limit access.
Conclusion
The buffer overflow vulnerability in the CUPS package poses a significant risk to systems running affected versions. It is crucial to update to the patched version to mitigate the risk of exploitation. Additionally, implementing network access restrictions can serve as a temporary measure until the update is applied.
See every vulnerability recorded for cups →
FAQ
CVE-2019-8675 is a buffer overflow vulnerability in the CUPS package that can allow an attacker to execute arbitrary code.
You can check your CUPS version using the command 'cups-config --version' and compare it against the patched version 2.2.12-r0.
If left unaddressed, this vulnerability could allow an attacker to gain unauthorized access to your system and execute malicious code.
Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just a manifest file like package-lock.json.
Detailed information about CVE-2019-8675 can be found in the official CVE database and security advisories related to the CUPS package.
References
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