Insecure Temporary File Vulnerability in Kamailio 4.0.1
Summary
CVE-2013-7426: Insecure Temporary file vulnerability in /tmp/kamailio_fifo in kamailio 4.0.1. Affects kamailio versions < 4.0.2-1. Fixed in 4.0.2-1. How to fix ↓
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Background
Kamailio is an open-source SIP server that facilitates voice and video communication over the internet. It is widely used for building scalable and robust VoIP applications. The package is known for its flexibility and performance, allowing users to handle thousands of calls simultaneously. However, Kamailio 4.0.1 has a critical vulnerability related to insecure temporary file handling, which can expose sensitive data and compromise system security.
Vulnerability Detail
CVE-2013-7426 is an insecure temporary file vulnerability found in Kamailio 4.0.1. This vulnerability arises from the improper handling of temporary files in the /tmp/kamailio_fifo directory. Attackers can exploit this flaw to gain unauthorized access to sensitive information, leading to potential data breaches or system compromise. The vulnerability has a CVSS score of 9.8, indicating a high severity level, and affects multiple Debian ecosystems, including versions 11, 12, and 13.
How To Fix
Minimum fixed version
4.0.2-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade kamailioTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, you can restrict access to the /tmp/kamailio_fifo directory by changing its permissions. Execute the following command:
sudo chmod 700 /tmp/kamailio_fifo
This will limit access to the directory, reducing the risk of exploitation until the software can be updated.
Conclusion
The insecure temporary file vulnerability in Kamailio 4.0.1 poses significant risks to users, including potential data breaches and unauthorized access. It is crucial to upgrade to version 4.0.2-1 or later to mitigate these risks. Additionally, utilizing tools like Vulert can help monitor and manage vulnerabilities in your applications effectively.
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FAQ
CVE-2013-7426 is a vulnerability in Kamailio 4.0.1 that involves insecure handling of temporary files, potentially allowing unauthorized access to sensitive data.
You can check your Kamailio version by running 'kamailio -v' in your terminal. If it is 4.0.1, it is affected by this vulnerability.
The risks include unauthorized access to sensitive information, potential data breaches, and system compromise, which could lead to further attacks.
Yes, you can use Vulert, which monitors and alerts you in real-time for open-source vulnerabilities using a manifest file like package-lock.json.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
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