CVE-2024-49363

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2024-49363

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-49363.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2024-49363

Aliases

GHSA-gq5q-c77c-v236

Published

2024-12-18T19:24:34.399Z

Modified

2026-08-12T03:51:48.685935733Z

Severity

7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H CVSS Calculator

Summary

Uncontrolled Recursion and Asymmetric Resource Consumption (Amplification) in media/file proxy in Misskey

Details

Misskey is an open source, federated social media platform. In affected versions FileServerService (media proxy) in github.com/misskey-dev/misskey 2024.10.1 or earlier did not detect proxy loops, which allows remote actors to execute a self-propagating reflected/amplified distributed denial-of-service via a maliciously crafted note. FileServerService.prototype.proxyHandler did not check incoming requests are not coming from another proxy server. An attacker can execute an amplified denial-of-service by sending a nested proxy request to the server and end the request with a malicious redirect back to another nested proxy request. Leading to unbounded recursion until the original request is timed out. This issue has been addressed in version 2024.11.0-alpha.3. Users are advised to upgrade. Users unable to upgrade may configure the reverse proxy to block requests to the proxy with an empty User-Agent header or one containing Misskey/. An attacker can not effectively modify the User-Agent header without making another request to the server.

Database specific

{
    "cwe_ids": [
        "CWE-405",
        "CWE-674"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49363.json",
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/misskey-dev/misskey

Affected ranges

Type

GIT

Repo

https://github.com/misskey-dev/misskey

Events

Introduced

e55a254353b608795386ae5efe1104f1177e6fd6

Last affected

e55a254353b608795386ae5efe1104f1177e6fd6

Database specific

Show details

{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "< CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H"
        },
        {
            "last_affected": "< CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H"
        }
    ]
}

Affected versions

3.*

3.1.0

< CVSS:3.*

< CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-49363.json"