CVE-2025-55013

The Assemblyline 4 Service Client interfaces with the API to fetch tasks and publish the result for a service in Assemblyline 4. In versions below 4.6.1.dev138, the Assemblyline 4 Service Client (task_handler.py) accepts a SHA-256 value returned by the service server and uses it directly as a local file name.A malicious or compromised server (or any MITM that can speak to client) can return a path-traversal payload such as `../../../etc/cron.d/evil` and force the client to write the downloaded bytes to an arbitrary location on disk. This is fixed in version 4.6.1.dev138.

Score

CVSS 3.1 4.2 Medium

Status

Deferred - security-advisories@github.com

Published

2025-08-09

Last modified

2025-08-12

Weaknesses

CWE-23

Affected products

• Assemblyline (Cybercentrecanada)

References

• https://github.com/CybercentreCanada/assemblyline-service-client/commit/351414e7e96cc1f5640ae71ae51b939e8ba30900
• https://github.com/CybercentreCanada/assemblyline/security/advisories/GHSA-75jv-vfxf-3865