CVE-2021-33820

An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67.Attacker could send a huge amount of TCP SYN packet to make web service's resource exhausted. Then the web server is denial-of-service.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

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

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33820.md	Exploit Third Party Advisory
https://linuxhint.com/hping3/	Third Party Advisory
https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera	Product Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:ui:camera_g3_flex_firmware:uvc.v4.30.0.67:*:*:*:*:*:*:*

cpe:2.3:h:ui:camera_g3_flex:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-06-18 19:15

Updated : 2024-02-28 18:28

NVD link : CVE-2021-33820

Mitre link : CVE-2021-33820

CVE.ORG link : CVE-2021-33820

JSON object : View

Products Affected

ui

camera_g3_flex
camera_g3_flex_firmware

CWE

NVD-CWE-noinfo

{"id": "CVE-2021-33820", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "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}]}, "published": "2021-06-18T19:15:07.537", "references": [{"url": "https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33820.md", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://linuxhint.com/hping3/", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera", "tags": ["Product", "Vendor Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67.Attacker could send a huge amount of TCP SYN packet to make web service's resource exhausted. Then the web server is denial-of-service."}, {"lang": "es", "value": "Se ha detectado un problema en UniFi Protect G3 FLEX Camera versi\u00f3n UVC.v4.30.0.67. El atacante puede enviar una gran cantidad de paquetes TCP SYN para hacer que los recursos del servicio web sean agotados. Entonces, el servidor web sufre una denegaci\u00f3n de servicio"}], "lastModified": "2022-07-12T17:42:04.277", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:ui:camera_g3_flex_firmware:uvc.v4.30.0.67:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7E4F3486-7BB0-42FF-83B0-D5AFCE90F991"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:ui:camera_g3_flex:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "B0141593-3700-4739-B778-E1A861360E83"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}