CVE-2021-33818 (GCVE-0-2021-33818)
Vulnerability from cvelistv5 – Published: 2021-06-18 18:38 – Updated: 2024-08-03 23:58
VLAI?
Summary
An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T23:58:23.169Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/shekyan/slowhttptest"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-06-18T18:38:03.000Z",
"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"shortName": "mitre"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/shekyan/slowhttptest"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "cve@mitre.org",
"ID": "CVE-2021-33818",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/shekyan/slowhttptest",
"refsource": "MISC",
"url": "https://github.com/shekyan/slowhttptest"
},
{
"name": "https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera",
"refsource": "MISC",
"url": "https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera"
},
{
"name": "https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md",
"refsource": "MISC",
"url": "https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2021-33818",
"datePublished": "2021-06-18T18:38:03.000Z",
"dateReserved": "2021-06-03T00:00:00.000Z",
"dateUpdated": "2024-08-03T23:58:23.169Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-33818",
"date": "2026-05-04",
"epss": "0.0056",
"percentile": "0.68337"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2021-33818\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-06-18T19:15:07.497\",\"lastModified\":\"2024-11-21T06:09:37.593\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its 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. Unos atacantes pueden usar la herramienta slowhttptest para enviar peticiones HTTP incompletas, lo que podr\u00eda hacer que el servidor siga esperando a que el paquete termine la conexi\u00f3n, hasta que sean agotados sus recursos. Entonces el servidor web sufre una denegaci\u00f3n de servicio\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:N/A:P\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:ui:camera_g3_flex_firmware:uvc.v4.30.0.67:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7E4F3486-7BB0-42FF-83B0-D5AFCE90F991\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:ui:camera_g3_flex:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B0141593-3700-4739-B778-E1A861360E83\"}]}]}],\"references\":[{\"url\":\"https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/shekyan/slowhttptest\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera\",\"source\":\"cve@mitre.org\",\"tags\":[\"Product\",\"Vendor Advisory\"]},{\"url\":\"https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/shekyan/slowhttptest\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Product\",\"Vendor Advisory\"]}]}}"
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…