CVE-2022-43304 is a recently discovered vulnerability in the d8s-timer Python package distributed on PyPI that affects version .1.. The vulnerability, associated with a code-execution backdoor, has been inserted by a third party into the package. This third party is the democritus-uuids package. This blog post provides an in-depth analysis of the vulnerability, its potential impact, and recommended mitigation steps.

Exploit Details

The CVE-2022-43304 vulnerability originates from the addition of a potentially malicious code execution backdoor by an unauthorized third party. This backdoor has been introduced through a dependency on the democritus-uuids package, which contains malicious code that can be executed upon importing the d8s-timer package. Below is the code snippet that demonstrates the issue:

# d8s_timer/
from democritus_uuids import *  # this import causes the backdoor to be executed

class Timer:
  #... (the rest of the file)

When the d8s-timer package is imported, it also imports the democritus-uuids package, which in turn, triggers the execution of the malicious code contained within it.

Impact and Risks

Given that this vulnerability allows an attacker to execute arbitrary code on a victim's machine, without their knowledge or consent, the impact and risks associated with CVE-2022-43304 are significant:

1. Unauthorized access and control: An attacker could use this backdoor to gain unauthorized access and control over a user's machine running the affected version of d8s-timer. This could result in data theft, system disruption, or distribution of other malicious software.

2. Privilege escalation: In some cases, the attacker might leverage the backdoor to escalate privileges on the victim's machine, potentially causing more severe damage.

3. Confidentiality and integrity risks: The presence of this vulnerability could potentially compromise the confidentiality and integrity of any environment where the d8s-timer package .1. is used.

Original Reference and Affected Package

The original reference to this vulnerability can be found at the National Vulnerability Database (NVD) website, which provides more detailed information about the issue and its potential impact.

The affected package is d8s-timer version .1., available on PyPI, the Python Package Index repository. The package's source code can be found on GitHub.

Mitigation Steps

Below, we've outlined some recommended steps to help mitigate the risks associated with CVE-2022-43304:

1. Update to a newer version: If you're using d8s-timer .1., you should immediately update to the latest version as it has removed the vulnerability. You can update the package using pip:


2. Use an alternative package: If you can't update to a newer version, consider using alternative timer packages or built-in timer functions such as timeit and threading.Timer from the Python Standard Library.

3. Audit your dependencies: Regularly check your project dependencies—including transitive dependencies—for known vulnerabilities. Tools like Safety or pip-audit can help automate this process.

4. Monitor security announcements: Keep yourself informed about security announcements concerning the packages you use. Subscribe to security advisory mailing lists, follow relevant projects on social media or GitHub, or use other channels to stay updated about new vulnerabilities and patches.

In summary, CVE-2022-43304 is a critical vulnerability with the potential to cause severe consequences if left unaddressed. It is crucial for users of d8s-timer to take immediate action to mitigate the risks associated with this vulnerability.


Published on: 11/07/2022 15:15:00 UTC
Last modified on: 11/08/2022 17:02:00 UTC