Assemblyline 4 Service Client: Arbitrary Write through path traversal in Client code_CVE-2025-55013

{
    "lastseen": "",
    "description": "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.",
    "published": "2025-08-09T02:02:23.602Z",
    "modified": "2025-08-09T02:02:23.602Z",
    "type": "cve",
    "title": "Assemblyline 4 Service Client: Arbitrary Write through path traversal in Client code",
    "source": "GitHub_M",
    "references": "https://github.com/CybercentreCanada/assemblyline/security/advisories/GHSA-75jv-vfxf-3865\nhttps://github.com/CybercentreCanada/assemblyline-service-client/commit/351414e7e96cc1f5640ae71ae51b939e8ba30900",
    "id": "CVE-2025-55013",
    "bulletinFamily": "",
    "cwe": [
        "CWE-23"
    ],
    "cvelist": null,
    "sourceData": "CybercentreCanada assemblyline < 4.6.1.dev138",
    "sourceHref": "",
    "cvss": {
        "score": 10,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "assemblyline",
    "version": "< 4.6.1.dev138",
    "vendor": "CybercentreCanada",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}