181 lines
7.1 KiB
JSON
181 lines
7.1 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"cveMetadata": {
|
|
"state": "PUBLISHED",
|
|
"cveId": "CVE-2021-27137",
|
|
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
|
|
"assignerShortName": "mitre",
|
|
"dateUpdated": "2026-07-22T03:55:45.793Z",
|
|
"dateReserved": "2021-02-10T00:00:00.000Z",
|
|
"datePublished": "2026-07-16T00:00:00.000Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"affected": [
|
|
{
|
|
"defaultStatus": "unaffected",
|
|
"product": "DD-WRT",
|
|
"vendor": "DD-WRT",
|
|
"versions": [
|
|
{
|
|
"lessThan": "45724",
|
|
"status": "affected",
|
|
"version": "0",
|
|
"versionType": "custom"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "An issue was discovered in router/upnp/src/ssdp.c in DD-WRT before 45724. An unsafe strcpy in the UPnP handling functionality allows an unauthenticated remote attacker to send a request that would overflow an internal fixed buffer. Exploitation requires the DD-WRT user to enable UPnP (which is off by default, and only listens on internal interfaces by default). This occurs in ssdp_msearch (reachable by an M-SEARCH request)."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"attackComplexity": "HIGH",
|
|
"attackVector": "NETWORK",
|
|
"availabilityImpact": "HIGH",
|
|
"baseScore": 8.1,
|
|
"baseSeverity": "HIGH",
|
|
"confidentialityImpact": "HIGH",
|
|
"integrityImpact": "HIGH",
|
|
"privilegesRequired": "NONE",
|
|
"scope": "UNCHANGED",
|
|
"userInteraction": "NONE",
|
|
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
|
|
"version": "3.1"
|
|
},
|
|
"format": "CVSS",
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "GENERAL"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-121",
|
|
"description": "CWE-121 Stack-based Buffer Overflow",
|
|
"lang": "en",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
|
|
"shortName": "mitre",
|
|
"dateUpdated": "2026-07-16T17:38:47.947Z"
|
|
},
|
|
"references": [
|
|
{
|
|
"url": "https://svn.dd-wrt.com/changeset/45724"
|
|
},
|
|
{
|
|
"url": "https://ssd-disclosure.com/ssd-advisory-dd-wrt-upnp-buffer-overflow/"
|
|
},
|
|
{
|
|
"url": "https://securityaffairs.com/193290/uncategorized/iot-botnet-c0xmo-adds-competitor-killing-capability.html"
|
|
},
|
|
{
|
|
"url": "https://www.bleepingcomputer.com/news/security/c0xmo-botnet-spreads-via-dd-wrt-router-flaw-kills-rival-malware/"
|
|
},
|
|
{
|
|
"url": "https://www.fortinet.com/blog/threat-research/inside-cross-platform-propagation-of-new-gafgyt-variant-c0xmo"
|
|
}
|
|
],
|
|
"x_generator": {
|
|
"engine": "enrichogram 0.0.1"
|
|
},
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:a:dd-wrt:dd-wrt:*:*:*:*:*:*:*:*",
|
|
"versionEndExcluding": "45724"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
]
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-07-21T00:00:00+00:00",
|
|
"options": [
|
|
{
|
|
"Exploitation": "active"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3",
|
|
"id": "CVE-2021-27137"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"other": {
|
|
"type": "kev",
|
|
"content": {
|
|
"dateAdded": "2026-07-21",
|
|
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27137"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://ssd-disclosure.com/ssd-advisory-dd-wrt-upnp-buffer-overflow/",
|
|
"tags": [
|
|
"exploit"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27137",
|
|
"tags": [
|
|
"government-resource"
|
|
]
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-07-22T03:55:45.793Z"
|
|
},
|
|
"timeline": [
|
|
{
|
|
"time": "2026-07-21T00:00:00.000Z",
|
|
"lang": "en",
|
|
"value": "CVE-2021-27137 added to CISA KEV"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
},
|
|
"dataVersion": "5.2"
|
|
} |