var-202110-1327
Vulnerability from variot
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 1.01rc001 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the webproc endpoint, which listens on TCP port 80 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12104. D-Link DAP-2020 A stack-based buffer overflow vulnerability exists in the router. Zero Day Initiative To this vulnerability ZDI-CAN-12104 Was numbering.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. D-Link DAP-2020 is a wireless N access point
Show details on source website{ "affected_products": { "_id": null, "data": [ { "_id": null, "model": "dap-2020", "scope": null, "trust": 1.5, "vendor": "d link", "version": null }, { "_id": null, "model": "dap-2020", "scope": "lte", "trust": 1.0, "vendor": "dlink", "version": "1.01" }, { "_id": null, "model": "dap-2020", "scope": "eq", "trust": 0.8, "vendor": "d link", "version": null }, { "_id": null, "model": "dap-2020", "scope": "eq", "trust": 0.8, "vendor": "d link", "version": "dap-2020 firmware" }, { "_id": null, "model": "dap-2020", "scope": "lte", "trust": 0.6, "vendor": "d link", "version": "\u003c=1.01" } ], "sources": [ { "db": "ZDI", "id": "ZDI-21-977" }, { "db": "CNVD", "id": "CNVD-2021-67522" }, { "db": "JVNDB", "id": "JVNDB-2021-014128" }, { "db": "NVD", "id": "CVE-2021-34861" } ] }, "credits": { "_id": null, "data": "chung96vn ft phieulang ft ChiTran", "sources": [ { "db": "ZDI", "id": "ZDI-21-977" }, { "db": "CNNVD", "id": "CNNVD-202108-1620" } ], "trust": 1.3 }, "cve": "CVE-2021-34861", "cvss": { "_id": null, "data": [ { "cvssV2": [ { "accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "author": "nvd@nist.gov", "availabilityImpact": "PARTIAL", "baseScore": 5.8, "confidentialityImpact": "PARTIAL", "exploitabilityScore": 6.5, "id": "CVE-2021-34861", "impactScore": 6.4, "integrityImpact": "PARTIAL", "severity": "MEDIUM", "trust": 1.8, "vectorString": "AV:A/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0" }, { "accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "author": "CNVD", "availabilityImpact": "COMPLETE", "baseScore": 8.3, "confidentialityImpact": "COMPLETE", "exploitabilityScore": 6.5, "id": "CNVD-2021-67522", "impactScore": 10.0, "integrityImpact": "COMPLETE", "severity": "HIGH", "trust": 0.6, "vectorString": "AV:A/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0" } ], "cvssV3": [ { "attackComplexity": "LOW", "attackVector": "ADJACENT", "author": "zdi-disclosures@trendmicro.com", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "exploitabilityScore": 2.8, "id": "CVE-2021-34861", "impactScore": 5.9, "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "trust": 1.8, "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0" }, { "attackComplexity": "LOW", "attackVector": "ADJACENT", "author": "nvd@nist.gov", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "exploitabilityScore": 2.8, "id": "CVE-2021-34861", "impactScore": 5.9, "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "trust": 1.0, "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, { "attackComplexity": "LOW", "attackVector": "ADJACENT", "author": "ZDI", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "exploitabilityScore": 2.8, "id": "CVE-2021-34861", "impactScore": 5.9, "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "trust": 0.7, "userInteraction": "NONE", "vectorString": "AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0" } ], "severity": [ { "author": "nvd@nist.gov", "id": "CVE-2021-34861", "trust": 1.0, "value": "HIGH" }, { "author": "zdi-disclosures@trendmicro.com", "id": "CVE-2021-34861", "trust": 1.0, "value": "HIGH" }, { "author": "NVD", "id": "CVE-2021-34861", "trust": 0.8, "value": "High" }, { "author": "ZDI", "id": "CVE-2021-34861", "trust": 0.7, "value": "HIGH" }, { "author": "CNVD", "id": "CNVD-2021-67522", "trust": 0.6, "value": "HIGH" }, { "author": "CNNVD", "id": "CNNVD-202108-1620", "trust": 0.6, "value": "HIGH" } ] } ], "sources": [ { "db": "ZDI", "id": "ZDI-21-977" }, { "db": "CNVD", "id": "CNVD-2021-67522" }, { "db": "JVNDB", "id": "JVNDB-2021-014128" }, { "db": "CNNVD", "id": "CNNVD-202108-1620" }, { "db": "NVD", "id": "CVE-2021-34861" }, { "db": "NVD", "id": "CVE-2021-34861" } ] }, "description": { "_id": null, "data": "This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 1.01rc001 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the webproc endpoint, which listens on TCP port 80 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12104. D-Link DAP-2020 A stack-based buffer overflow vulnerability exists in the router. Zero Day Initiative To this vulnerability ZDI-CAN-12104 Was numbering.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. D-Link DAP-2020 is a wireless N access point", "sources": [ { "db": "NVD", "id": "CVE-2021-34861" }, { "db": "JVNDB", "id": "JVNDB-2021-014128" }, { "db": "ZDI", "id": "ZDI-21-977" }, { "db": "CNVD", "id": "CNVD-2021-67522" }, { "db": "VULMON", "id": "CVE-2021-34861" } ], "trust": 2.88 }, "external_ids": { "_id": null, "data": [ { "db": "NVD", "id": "CVE-2021-34861", "trust": 4.6 }, { "db": "ZDI", "id": "ZDI-21-977", "trust": 3.8 }, { "db": "DLINK", "id": "SAP10201", "trust": 1.6 }, { "db": "JVNDB", "id": "JVNDB-2021-014128", "trust": 0.8 }, { "db": "ZDI_CAN", "id": "ZDI-CAN-12104", "trust": 0.7 }, { "db": "CNVD", "id": "CNVD-2021-67522", "trust": 0.6 }, { "db": "CS-HELP", "id": "SB2021100105", "trust": 0.6 }, { "db": "CNNVD", "id": "CNNVD-202108-1620", "trust": 0.6 }, { "db": "VULMON", "id": "CVE-2021-34861", "trust": 0.1 } ], "sources": [ { "db": "ZDI", "id": "ZDI-21-977" }, { "db": "CNVD", "id": "CNVD-2021-67522" }, { "db": "VULMON", "id": "CVE-2021-34861" }, { "db": "JVNDB", "id": "JVNDB-2021-014128" }, { "db": "CNNVD", "id": "CNNVD-202108-1620" }, { "db": "NVD", "id": "CVE-2021-34861" } ] }, "id": "VAR-202110-1327", "iot": { "_id": null, "data": true, "sources": [ { "db": "CNVD", "id": "CNVD-2021-67522" } ], "trust": 1.24 }, "iot_taxonomy": { "_id": null, "data": [ { "category": [ "Network device" ], "sub_category": null, "trust": 0.6 } ], "sources": [ { "db": "CNVD", "id": "CNVD-2021-67522" } ] }, "last_update_date": "2024-08-14T14:18:20.119000Z", "patch": { "_id": null, "data": [ { "title": "Multiple\u00a0Vulnerability", "trust": 1.5, "url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201" }, { "title": "Patch for D-Link DAP-2020 stack buffer overflow vulnerability (CNVD-2021-67522)", "trust": 0.6, "url": "https://www.cnvd.org.cn/patchInfo/show/288986" }, { "title": "D-Link DAP-2020 Security vulnerabilities", "trust": 0.6, "url": "http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=164632" } ], "sources": [ { "db": "ZDI", "id": "ZDI-21-977" }, { "db": "CNVD", "id": "CNVD-2021-67522" }, { "db": "JVNDB", "id": "JVNDB-2021-014128" }, { "db": "CNNVD", "id": "CNNVD-202108-1620" } ] }, "problemtype_data": { "_id": null, "data": [ { "problemtype": "CWE-121", "trust": 1.0 }, { "problemtype": "Stack-based buffer overflow (CWE-121) [ others ]", "trust": 0.8 } ], "sources": [ { "db": "JVNDB", "id": "JVNDB-2021-014128" }, { "db": "NVD", "id": "CVE-2021-34861" } ] }, "references": { "_id": null, "data": [ { "trust": 3.7, "url": "https://www.zerodayinitiative.com/advisories/zdi-21-977/" }, { "trust": 2.3, "url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=sap10201" }, { "trust": 0.8, "url": "https://nvd.nist.gov/vuln/detail/cve-2021-34861" }, { "trust": 0.6, "url": "https://www.cybersecurity-help.cz/vdb/sb2021100105" } ], "sources": [ { "db": "ZDI", "id": "ZDI-21-977" }, { "db": "CNVD", "id": "CNVD-2021-67522" }, { "db": "VULMON", "id": "CVE-2021-34861" }, { "db": "JVNDB", "id": "JVNDB-2021-014128" }, { "db": "CNNVD", "id": "CNNVD-202108-1620" }, { "db": "NVD", "id": "CVE-2021-34861" } ] }, "sources": { "_id": null, "data": [ { "db": "ZDI", "id": "ZDI-21-977", "ident": null }, { "db": "CNVD", "id": "CNVD-2021-67522", "ident": null }, { "db": "VULMON", "id": "CVE-2021-34861", "ident": null }, { "db": "JVNDB", "id": "JVNDB-2021-014128", "ident": null }, { "db": "CNNVD", "id": "CNNVD-202108-1620", "ident": null }, { "db": "NVD", "id": "CVE-2021-34861", "ident": null } ] }, "sources_release_date": { "_id": null, "data": [ { "date": "2021-08-18T00:00:00", "db": "ZDI", "id": "ZDI-21-977", "ident": null }, { "date": "2021-09-02T00:00:00", "db": "CNVD", "id": "CNVD-2021-67522", "ident": null }, { "date": "2022-10-05T00:00:00", "db": "JVNDB", "id": "JVNDB-2021-014128", "ident": null }, { "date": "2021-08-18T00:00:00", "db": "CNNVD", "id": "CNNVD-202108-1620", "ident": null }, { "date": "2021-10-25T17:15:08.477000", "db": "NVD", "id": "CVE-2021-34861", "ident": null } ] }, "sources_update_date": { "_id": null, "data": [ { "date": "2021-08-18T00:00:00", "db": "ZDI", "id": "ZDI-21-977", "ident": null }, { "date": "2021-09-02T00:00:00", "db": "CNVD", "id": "CNVD-2021-67522", "ident": null }, { "date": "2022-10-05T05:58:00", "db": "JVNDB", "id": "JVNDB-2021-014128", "ident": null }, { "date": "2021-10-28T00:00:00", "db": "CNNVD", "id": "CNNVD-202108-1620", "ident": null }, { "date": "2023-04-26T19:27:52.350000", "db": "NVD", "id": "CVE-2021-34861", "ident": null } ] }, "threat_type": { "_id": null, "data": "remote or local", "sources": [ { "db": "CNNVD", "id": "CNNVD-202108-1620" } ], "trust": 0.6 }, "title": { "_id": null, "data": "D-Link\u00a0DAP-2020\u00a0 Stack-based buffer overflow vulnerability in routers", "sources": [ { "db": "JVNDB", "id": "JVNDB-2021-014128" } ], "trust": 0.8 }, "type": { "_id": null, "data": "other", "sources": [ { "db": "CNNVD", "id": "CNNVD-202108-1620" } ], "trust": 0.6 } }
Sightings
Author | Source | Type | Date |
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Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
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- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.