CVE-2021-33959

Plex media server 1.21 and before is vulnerable to ddos reflection attack via plex service.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/lixiang957/CVE-2021-33959	Exploit Third Party Advisory
https://www.freebuf.com/articles/web/260338.html	Exploit Technical Description Third Party Advisory
https://github.com/lixiang957/CVE-2021-33959	Exploit Third Party Advisory
https://www.freebuf.com/articles/web/260338.html	Exploit Technical Description Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:plex:media_server:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:09

Type	Values Removed	Values Added
References	~~() https://github.com/lixiang957/CVE-2021-33959 - Exploit, Third Party Advisory~~	() https://github.com/lixiang957/CVE-2021-33959 - Exploit, Third Party Advisory
References	~~() https://www.freebuf.com/articles/web/260338.html - Exploit, Technical Description, Third Party Advisory~~	() https://www.freebuf.com/articles/web/260338.html - Exploit, Technical Description, Third Party Advisory

Information

Published : 2023-01-18 14:15

Updated : 2025-04-04 18:15

NVD link : CVE-2021-33959

Mitre link : CVE-2021-33959

CVE.ORG link : CVE-2021-33959

JSON object : View

Products Affected

plex

media_server

CWE

CWE-346

Origin Validation Error

{"id": "CVE-2021-33959", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2023-01-18T14:15:10.707", "references": [{"url": "https://github.com/lixiang957/CVE-2021-33959", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.freebuf.com/articles/web/260338.html", "tags": ["Exploit", "Technical Description", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/lixiang957/CVE-2021-33959", "tags": ["Exploit", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.freebuf.com/articles/web/260338.html", "tags": ["Exploit", "Technical Description", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-346"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-346"}]}], "descriptions": [{"lang": "en", "value": "Plex media server 1.21 and before is vulnerable to ddos reflection attack via plex service."}, {"lang": "es", "value": "Plex Media Server en las versiones 1.21 y anteriores es vulnerable a un ataque DDos de reflexi\u00f3n a trav\u00e9s del servicio plex. "}], "lastModified": "2025-04-04T18:15:41.477", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:plex:media_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3DE6694F-26EB-4DC3-913B-55C65F7DCF91", "versionEndIncluding": "1.21"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}

7.5 /10