VAR-202109-1256
Vulnerability from variot - Updated: 2023-12-18 11:57A stack-based buffer overflow vulnerability in Advantech WebAccess Versions 9.02 and prior caused by a lack of proper validation of the length of user-supplied data may allow remote code execution. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess. Authentication is not required to exploit this vulnerability.The specific flaw exists within the handling of IOCTL 0x2711, which can be used to invoke BwFLApp.exe. An attacker can leverage this vulnerability to execute code in the context of Administrator. Advantech WebAccess is a set of browser-based HMI/SCADA software from Advantech.
A stack buffer overflow vulnerability exists in Advantech WebAccess 9.02 and earlier. The software supports dynamic graphic display and real-time data control, and provides functions of remote control and management of automation equipment
Show details on source website{
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/VARIoTentry#",
"affected_products": {
"@id": "https://www.variotdbs.pl/ref/affected_products"
},
"configurations": {
"@id": "https://www.variotdbs.pl/ref/configurations"
},
"credits": {
"@id": "https://www.variotdbs.pl/ref/credits"
},
"cvss": {
"@id": "https://www.variotdbs.pl/ref/cvss/"
},
"description": {
"@id": "https://www.variotdbs.pl/ref/description/"
},
"exploit_availability": {
"@id": "https://www.variotdbs.pl/ref/exploit_availability/"
},
"external_ids": {
"@id": "https://www.variotdbs.pl/ref/external_ids/"
},
"iot": {
"@id": "https://www.variotdbs.pl/ref/iot/"
},
"iot_taxonomy": {
"@id": "https://www.variotdbs.pl/ref/iot_taxonomy/"
},
"patch": {
"@id": "https://www.variotdbs.pl/ref/patch/"
},
"problemtype_data": {
"@id": "https://www.variotdbs.pl/ref/problemtype_data/"
},
"references": {
"@id": "https://www.variotdbs.pl/ref/references/"
},
"sources": {
"@id": "https://www.variotdbs.pl/ref/sources/"
},
"sources_release_date": {
"@id": "https://www.variotdbs.pl/ref/sources_release_date/"
},
"sources_update_date": {
"@id": "https://www.variotdbs.pl/ref/sources_update_date/"
},
"threat_type": {
"@id": "https://www.variotdbs.pl/ref/threat_type/"
},
"title": {
"@id": "https://www.variotdbs.pl/ref/title/"
},
"type": {
"@id": "https://www.variotdbs.pl/ref/type/"
}
},
"@id": "https://www.variotdbs.pl/vuln/VAR-202109-1256",
"affected_products": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/affected_products#",
"data": {
"@container": "@list"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
},
"@id": "https://www.variotdbs.pl/ref/sources"
}
},
"data": [
{
"model": "webaccess",
"scope": "lte",
"trust": 1.0,
"vendor": "advantech",
"version": "9.02"
},
{
"model": "webaccess",
"scope": null,
"trust": 0.7,
"vendor": "advantech",
"version": null
},
{
"model": "webaccess",
"scope": "lte",
"trust": 0.6,
"vendor": "advantech",
"version": "\u003c=9.02"
}
],
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-1054"
},
{
"db": "CNVD",
"id": "CNVD-2021-80272"
},
{
"db": "NVD",
"id": "CVE-2021-38408"
}
]
},
"configurations": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/configurations#",
"children": {
"@container": "@list"
},
"cpe_match": {
"@container": "@list"
},
"data": {
"@container": "@list"
},
"nodes": {
"@container": "@list"
}
},
"data": [
{
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "9.02",
"vulnerable": true
}
],
"operator": "OR"
}
]
}
],
"sources": [
{
"db": "NVD",
"id": "CVE-2021-38408"
}
]
},
"credits": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/credits#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": "Natnael Samson (@NattiSamson)",
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-1054"
},
{
"db": "CNNVD",
"id": "CNNVD-202109-132"
}
],
"trust": 1.3
},
"cve": "CVE-2021-38408",
"cvss": {
"@context": {
"cvssV2": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/cvss/cvssV2#"
},
"@id": "https://www.variotdbs.pl/ref/cvss/cvssV2"
},
"cvssV3": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/cvss/cvssV3#"
},
"@id": "https://www.variotdbs.pl/ref/cvss/cvssV3/"
},
"severity": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/cvss/severity#"
},
"@id": "https://www.variotdbs.pl/ref/cvss/severity"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
},
"@id": "https://www.variotdbs.pl/ref/sources"
}
},
"data": [
{
"cvssV2": [
{
"acInsufInfo": false,
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"author": "NVD",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"integrityImpact": "PARTIAL",
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "HIGH",
"trust": 1.0,
"userInteractionRequired": false,
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
{
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"author": "CNVD",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"exploitabilityScore": 10.0,
"id": "CNVD-2021-80272",
"impactScore": 6.4,
"integrityImpact": "PARTIAL",
"severity": "HIGH",
"trust": 0.6,
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
{
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"author": "VULHUB",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"exploitabilityScore": 10.0,
"id": "VHN-397274",
"impactScore": 6.4,
"integrityImpact": "PARTIAL",
"severity": "HIGH",
"trust": 0.1,
"vectorString": "AV:N/AC:L/AU:N/C:P/I:P/A:P",
"version": "2.0"
}
],
"cvssV3": [
{
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"author": "NVD",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"trust": 1.0,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
{
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"author": "ZDI",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"exploitabilityScore": 3.9,
"id": "CVE-2021-38408",
"impactScore": 5.9,
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"trust": 0.7,
"userInteraction": "NONE",
"vectorString": "AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
}
],
"severity": [
{
"author": "NVD",
"id": "CVE-2021-38408",
"trust": 1.0,
"value": "CRITICAL"
},
{
"author": "ZDI",
"id": "CVE-2021-38408",
"trust": 0.7,
"value": "CRITICAL"
},
{
"author": "CNVD",
"id": "CNVD-2021-80272",
"trust": 0.6,
"value": "HIGH"
},
{
"author": "CNNVD",
"id": "CNNVD-202109-132",
"trust": 0.6,
"value": "CRITICAL"
},
{
"author": "VULHUB",
"id": "VHN-397274",
"trust": 0.1,
"value": "HIGH"
}
]
}
],
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-1054"
},
{
"db": "CNVD",
"id": "CNVD-2021-80272"
},
{
"db": "VULHUB",
"id": "VHN-397274"
},
{
"db": "NVD",
"id": "CVE-2021-38408"
},
{
"db": "CNNVD",
"id": "CNNVD-202109-132"
}
]
},
"description": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/description#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": "A stack-based buffer overflow vulnerability in Advantech WebAccess Versions 9.02 and prior caused by a lack of proper validation of the length of user-supplied data may allow remote code execution. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess. Authentication is not required to exploit this vulnerability.The specific flaw exists within the handling of IOCTL 0x2711, which can be used to invoke BwFLApp.exe. An attacker can leverage this vulnerability to execute code in the context of Administrator. Advantech WebAccess is a set of browser-based HMI/SCADA software from Advantech. \n\r\n\r\nA stack buffer overflow vulnerability exists in Advantech WebAccess 9.02 and earlier. The software supports dynamic graphic display and real-time data control, and provides functions of remote control and management of automation equipment",
"sources": [
{
"db": "NVD",
"id": "CVE-2021-38408"
},
{
"db": "ZDI",
"id": "ZDI-21-1054"
},
{
"db": "CNVD",
"id": "CNVD-2021-80272"
},
{
"db": "VULHUB",
"id": "VHN-397274"
},
{
"db": "VULMON",
"id": "CVE-2021-38408"
}
],
"trust": 2.25
},
"external_ids": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/external_ids#",
"data": {
"@container": "@list"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": [
{
"db": "NVD",
"id": "CVE-2021-38408",
"trust": 3.1
},
{
"db": "ICS CERT",
"id": "ICSA-21-245-03",
"trust": 2.3
},
{
"db": "ZDI",
"id": "ZDI-21-1054",
"trust": 1.4
},
{
"db": "ZDI_CAN",
"id": "ZDI-CAN-12967",
"trust": 0.7
},
{
"db": "CNNVD",
"id": "CNNVD-202109-132",
"trust": 0.7
},
{
"db": "CNVD",
"id": "CNVD-2021-80272",
"trust": 0.6
},
{
"db": "AUSCERT",
"id": "ESB-2021.2982",
"trust": 0.6
},
{
"db": "VULHUB",
"id": "VHN-397274",
"trust": 0.1
},
{
"db": "VULMON",
"id": "CVE-2021-38408",
"trust": 0.1
}
],
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-1054"
},
{
"db": "CNVD",
"id": "CNVD-2021-80272"
},
{
"db": "VULHUB",
"id": "VHN-397274"
},
{
"db": "VULMON",
"id": "CVE-2021-38408"
},
{
"db": "NVD",
"id": "CVE-2021-38408"
},
{
"db": "CNNVD",
"id": "CNNVD-202109-132"
}
]
},
"id": "VAR-202109-1256",
"iot": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/iot#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": true,
"sources": [
{
"db": "CNVD",
"id": "CNVD-2021-80272"
},
{
"db": "VULHUB",
"id": "VHN-397274"
}
],
"trust": 1.13267184
},
"iot_taxonomy": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/iot_taxonomy#",
"data": {
"@container": "@list"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": [
{
"category": [
"ICS"
],
"sub_category": null,
"trust": 0.6
}
],
"sources": [
{
"db": "CNVD",
"id": "CNVD-2021-80272"
}
]
},
"last_update_date": "2023-12-18T11:57:12.737000Z",
"patch": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/patch#",
"data": {
"@container": "@list"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": [
{
"title": "Advantech has issued an update to correct this vulnerability.",
"trust": 0.7,
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-245-03"
},
{
"title": "Patch for Advantech WebAccess Stack Buffer Overflow Vulnerability (CNVD-2021-80272)",
"trust": 0.6,
"url": "https://www.cnvd.org.cn/patchinfo/show/294861"
},
{
"title": "Advantech WebAccess Buffer error vulnerability fix",
"trust": 0.6,
"url": "http://www.cnnvd.org.cn/web/xxk/bdxqbyid.tag?id=162157"
}
],
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-1054"
},
{
"db": "CNVD",
"id": "CNVD-2021-80272"
},
{
"db": "CNNVD",
"id": "CNNVD-202109-132"
}
]
},
"problemtype_data": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/problemtype_data#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": [
{
"problemtype": "CWE-121",
"trust": 1.1
}
],
"sources": [
{
"db": "VULHUB",
"id": "VHN-397274"
},
{
"db": "NVD",
"id": "CVE-2021-38408"
}
]
},
"references": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/references#",
"data": {
"@container": "@list"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": [
{
"trust": 3.6,
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-245-03"
},
{
"trust": 0.7,
"url": "https://www.zerodayinitiative.com/advisories/zdi-21-1054/"
},
{
"trust": 0.6,
"url": "https://nvd.nist.gov/vuln/detail/cve-2021-38408"
},
{
"trust": 0.6,
"url": "https://www.auscert.org.au/bulletins/esb-2021.2982"
}
],
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-1054"
},
{
"db": "CNVD",
"id": "CNVD-2021-80272"
},
{
"db": "VULHUB",
"id": "VHN-397274"
},
{
"db": "VULMON",
"id": "CVE-2021-38408"
},
{
"db": "NVD",
"id": "CVE-2021-38408"
},
{
"db": "CNNVD",
"id": "CNNVD-202109-132"
}
]
},
"sources": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#",
"data": {
"@container": "@list"
}
},
"data": [
{
"db": "ZDI",
"id": "ZDI-21-1054"
},
{
"db": "CNVD",
"id": "CNVD-2021-80272"
},
{
"db": "VULHUB",
"id": "VHN-397274"
},
{
"db": "VULMON",
"id": "CVE-2021-38408"
},
{
"db": "NVD",
"id": "CVE-2021-38408"
},
{
"db": "CNNVD",
"id": "CNNVD-202109-132"
}
]
},
"sources_release_date": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources_release_date#",
"data": {
"@container": "@list"
}
},
"data": [
{
"date": "2021-09-03T00:00:00",
"db": "ZDI",
"id": "ZDI-21-1054"
},
{
"date": "2021-10-26T00:00:00",
"db": "CNVD",
"id": "CNVD-2021-80272"
},
{
"date": "2021-09-09T00:00:00",
"db": "VULHUB",
"id": "VHN-397274"
},
{
"date": "2021-09-09T12:15:09.643000",
"db": "NVD",
"id": "CVE-2021-38408"
},
{
"date": "2021-09-02T00:00:00",
"db": "CNNVD",
"id": "CNNVD-202109-132"
}
]
},
"sources_update_date": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources_update_date#",
"data": {
"@container": "@list"
}
},
"data": [
{
"date": "2021-09-03T00:00:00",
"db": "ZDI",
"id": "ZDI-21-1054"
},
{
"date": "2022-01-18T00:00:00",
"db": "CNVD",
"id": "CNVD-2021-80272"
},
{
"date": "2021-09-20T00:00:00",
"db": "VULHUB",
"id": "VHN-397274"
},
{
"date": "2021-09-20T12:44:57.193000",
"db": "NVD",
"id": "CVE-2021-38408"
},
{
"date": "2021-09-18T00:00:00",
"db": "CNNVD",
"id": "CNNVD-202109-132"
}
]
},
"threat_type": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/threat_type#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": "remote",
"sources": [
{
"db": "CNNVD",
"id": "CNNVD-202109-132"
}
],
"trust": 0.6
},
"title": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/title#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": "Advantech WebAccess BwFLApp Stack-based Buffer Overflow Remote Code Execution Vulnerability",
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-1054"
}
],
"trust": 0.7
},
"type": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/type#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": "buffer error",
"sources": [
{
"db": "CNNVD",
"id": "CNNVD-202109-132"
}
],
"trust": 0.6
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
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…