CVE-2021-34982
Vulnerability from cvelistv5
Published
2024-05-07 22:54
Modified
2024-08-04 00:26
Severity ?
EPSS score ?
3.19%
(0.85828)
Summary
NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the httpd service, which listens on TCP port 80 by default. When parsing the strings file, the process does not properly validate 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-13709.
References
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
NETGEAR | Multiple Routers |
Version: V1.0.11.116_10.2.100 |
{ containers: { adp: [ { affected: [ { cpes: [ "cpe:2.3:o:netgear:multiple_router_firmware:1.0.11.116_10.0.100:*:*:*:*:*:*:*", ], defaultStatus: "unknown", product: "multiple_router_firmware", vendor: "netgear", versions: [ { status: "affected", version: "1.0.11.116_10.0.100", }, ], }, ], metrics: [ { other: { content: { id: "CVE-2021-34982", options: [ { Exploitation: "none", }, { Automatable: "no", }, { "Technical Impact": "total", }, ], role: "CISA Coordinator", timestamp: "2024-05-08T14:52:41.415481Z", version: "2.0.3", }, type: "ssvc", }, }, ], providerMetadata: { dateUpdated: "2024-06-04T17:12:45.927Z", orgId: "134c704f-9b21-4f2e-91b3-4a467353bcc0", shortName: "CISA-ADP", }, title: "CISA ADP Vulnrichment", }, { providerMetadata: { dateUpdated: "2024-08-04T00:26:55.936Z", orgId: "af854a3a-2127-422b-91ae-364da2661108", shortName: "CVE", }, references: [ { name: "ZDI-21-1274", tags: [ "x_research-advisory", "x_transferred", ], url: "https://www.zerodayinitiative.com/advisories/ZDI-21-1274/", }, { name: "vendor-provided URL", tags: [ "vendor-advisory", "x_transferred", ], url: "https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159", }, ], title: "CVE Program Container", }, ], cna: { affected: [ { defaultStatus: "unknown", product: "Multiple Routers", vendor: "NETGEAR", versions: [ { status: "affected", version: "V1.0.11.116_10.2.100", }, ], }, ], dateAssigned: "2021-06-30T08:56:51.718-05:00", datePublic: "2021-10-29T08:54:08.659-05:00", descriptions: [ { lang: "en", value: "NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the httpd service, which listens on TCP port 80 by default. When parsing the strings file, the process does not properly validate 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.\n\n\n\n\n. Was ZDI-CAN-13709.", }, ], metrics: [ { cvssV3_0: { baseScore: 8.8, baseSeverity: "HIGH", vectorString: "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", version: "3.0", }, format: "CVSS", }, ], problemTypes: [ { descriptions: [ { cweId: "CWE-121", description: "CWE-121: Stack-based Buffer Overflow", lang: "en", type: "CWE", }, ], }, ], providerMetadata: { dateUpdated: "2024-05-07T22:54:50.139Z", orgId: "99f1926a-a320-47d8-bbb5-42feb611262e", shortName: "zdi", }, references: [ { name: "ZDI-21-1274", tags: [ "x_research-advisory", ], url: "https://www.zerodayinitiative.com/advisories/ZDI-21-1274/", }, { name: "vendor-provided URL", tags: [ "vendor-advisory", ], url: "https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159", }, ], source: { lang: "en", value: "Sungur Labs", }, title: "NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability", }, }, cveMetadata: { assignerOrgId: "99f1926a-a320-47d8-bbb5-42feb611262e", assignerShortName: "zdi", cveId: "CVE-2021-34982", datePublished: "2024-05-07T22:54:50.139Z", dateReserved: "2021-06-17T19:27:05.662Z", dateUpdated: "2024-08-04T00:26:55.936Z", state: "PUBLISHED", }, dataType: "CVE_RECORD", dataVersion: "5.1", "vulnerability-lookup:meta": { nvd: "{\"cve\":{\"id\":\"CVE-2021-34982\",\"sourceIdentifier\":\"zdi-disclosures@trendmicro.com\",\"published\":\"2024-05-07T23:15:13.400\",\"lastModified\":\"2024-11-21T06:11:38.357\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability.\\n\\nThe specific flaw exists within the httpd service, which listens on TCP port 80 by default. When parsing the strings file, the process does not properly validate 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.\\n\\n\\n\\n\\n. Was ZDI-CAN-13709.\"},{\"lang\":\"es\",\"value\":\"Vulnerabilidad de ejecución remota de código de desbordamiento de búfer en la región stack de la memoria httpd de múltiples enrutadores de NETGEAR. Esta vulnerabilidad permite a atacantes adyacentes a la red ejecutar código arbitrario en instalaciones afectadas de múltiples enrutadores NETGEAR. No se requiere autenticación para aprovechar esta vulnerabilidad. La falla específica existe dentro del servicio httpd, que escucha en el puerto TCP 80 de forma predeterminada. Al analizar el archivo de cadenas, el proceso no valida correctamente la longitud de los datos proporcionados por el usuario antes de copiarlos en un búfer basado en pila de longitud fija. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto de la raíz. Era ZDI-CAN-13709.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"zdi-disclosures@trendmicro.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"zdi-disclosures@trendmicro.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-121\"}]}],\"references\":[{\"url\":\"https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159\",\"source\":\"zdi-disclosures@trendmicro.com\"},{\"url\":\"https://www.zerodayinitiative.com/advisories/ZDI-21-1274/\",\"source\":\"zdi-disclosures@trendmicro.com\"},{\"url\":\"https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.zerodayinitiative.com/advisories/ZDI-21-1274/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}", vulnrichment: { containers: "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://www.zerodayinitiative.com/advisories/ZDI-21-1274/\", \"name\": \"ZDI-21-1274\", \"tags\": [\"x_research-advisory\", \"x_transferred\"]}, {\"url\": \"https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159\", \"name\": \"vendor-provided URL\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T00:26:55.936Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-34982\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-08T14:52:41.415481Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:o:netgear:multiple_router_firmware:1.0.11.116_10.0.100:*:*:*:*:*:*:*\"], \"vendor\": \"netgear\", \"product\": \"multiple_router_firmware\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.0.11.116_10.0.100\"}], \"defaultStatus\": \"unknown\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-08T14:55:02.931Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability\", \"source\": {\"lang\": \"en\", \"value\": \"Sungur Labs\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_0\": {\"version\": \"3.0\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\"}}], \"affected\": [{\"vendor\": \"NETGEAR\", \"product\": \"Multiple Routers\", \"versions\": [{\"status\": \"affected\", \"version\": \"V1.0.11.116_10.2.100\"}], \"defaultStatus\": \"unknown\"}], \"datePublic\": \"2021-10-29T08:54:08.659-05:00\", \"references\": [{\"url\": \"https://www.zerodayinitiative.com/advisories/ZDI-21-1274/\", \"name\": \"ZDI-21-1274\", \"tags\": [\"x_research-advisory\"]}, {\"url\": \"https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159\", \"name\": \"vendor-provided URL\", \"tags\": [\"vendor-advisory\"]}], \"dateAssigned\": \"2021-06-30T08:56:51.718-05:00\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability.\\n\\nThe specific flaw exists within the httpd service, which listens on TCP port 80 by default. When parsing the strings file, the process does not properly validate 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.\\n\\n\\n\\n\\n. Was ZDI-CAN-13709.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-121\", \"description\": \"CWE-121: Stack-based Buffer Overflow\"}]}], \"providerMetadata\": {\"orgId\": \"99f1926a-a320-47d8-bbb5-42feb611262e\", \"shortName\": \"zdi\", \"dateUpdated\": \"2024-05-07T22:54:50.139Z\"}}}", cveMetadata: "{\"cveId\": \"CVE-2021-34982\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-08-04T00:26:55.936Z\", \"dateReserved\": \"2021-06-17T19:27:05.662Z\", \"assignerOrgId\": \"99f1926a-a320-47d8-bbb5-42feb611262e\", \"datePublished\": \"2024-05-07T22:54:50.139Z\", \"assignerShortName\": \"zdi\"}", dataType: "CVE_RECORD", dataVersion: "5.1", }, }, }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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