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60 lines
2.5 KiB
JSON
60 lines
2.5 KiB
JSON
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{
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"id": "CVE-2024-49363",
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"sourceIdentifier": "security-advisories@github.com",
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"published": "2024-12-18T20:15:23.073",
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"lastModified": "2024-12-18T20:15:23.073",
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"vulnStatus": "Received",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "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.\nLeading 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."
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}
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],
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"metrics": {
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"cvssMetricV31": [
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{
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"source": "security-advisories@github.com",
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"type": "Secondary",
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"cvssData": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H",
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"baseScore": 7.4,
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"baseSeverity": "HIGH",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "REQUIRED",
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"scope": "CHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH"
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},
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"exploitabilityScore": 2.8,
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"impactScore": 4.0
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}
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]
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},
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"weaknesses": [
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{
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"source": "security-advisories@github.com",
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"type": "Primary",
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"description": [
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{
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"lang": "en",
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"value": "CWE-405"
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},
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{
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"lang": "en",
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"value": "CWE-674"
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}
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]
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}
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],
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"references": [
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{
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"url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-gq5q-c77c-v236",
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"source": "security-advisories@github.com"
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}
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]
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}
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