Critical Code Execution Vulnerability in python-dbusmock: CVE-2015-1326
Summary
CVE-2015-1326: python-dbusmock before version 0.15.1 AddTemplate() D-Bus method call or DBusTestCase.spawn_server_template() method could be tricked into executing malicious code if an attacker supplies a .pyc file. Affects python-dbusmock versions < 0.15.1-1. Fixed in 0.15.1-1. How to fix ↓
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Background
python-dbusmock is a Python library that provides a mock implementation of D-Bus, a message bus system that allows communication between multiple processes. It is widely used for testing applications that interact with D-Bus services. The library's functionality includes creating mock D-Bus services and handling method calls, which are essential for developers to simulate and test D-Bus interactions effectively. However, prior to version 0.15.1, the library contained a significant vulnerability that could allow attackers to execute arbitrary code through malicious .pyc files.
Vulnerability Detail
The vulnerability, identified as CVE-2015-1326, arises from the AddTemplate() D-Bus method call and the DBusTestCase.spawn_server_template() method in python-dbusmock before version 0.15.1. An attacker could exploit this vulnerability by supplying a specially crafted .pyc file, which could lead to the execution of arbitrary and potentially harmful code. This poses a severe risk, as it could allow unauthorized access to the system, data breaches, or further exploitation of the affected application. The CVSS score for this vulnerability is 8.8, indicating a high severity level.
How To Fix
Minimum fixed version
0.15.1-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade python-dbusmockTip — 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 the AddTemplate() method and refrain from executing any .pyc files from untrusted sources until the library is updated. This will help mitigate the risk of exploitation until a proper fix is applied.
Conclusion
The CVE-2015-1326 vulnerability in python-dbusmock poses a significant risk due to its potential for arbitrary code execution. Users are strongly advised to upgrade to version 0.15.1 or later to protect their systems. In the meantime, implementing workarounds can help mitigate risks until a proper fix is applied.
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FAQ
CVE-2015-1326 is a vulnerability in python-dbusmock that allows for arbitrary code execution through malicious .pyc files.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without needing to sign up.
Exploitation of this vulnerability could lead to unauthorized code execution, data breaches, and further exploitation of the affected system.
Yes, you should upgrade to python-dbusmock version 0.15.1 or later to mitigate this vulnerability.
If an immediate upgrade is not possible, avoid using the vulnerable methods and refrain from executing untrusted .pyc files as a temporary measure.
References
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