132 lines
6.0 KiB
JSON
132 lines
6.0 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-80212",
|
|
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "mitre",
|
|
"dateReserved": "2026-08-26T01:42:16.295Z",
|
|
"datePublished": "2026-08-27T14:15:04.403Z",
|
|
"dateUpdated": "2026-08-27T19:33:58.773Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"affected": [
|
|
{
|
|
"defaultStatus": "unaffected",
|
|
"packageURL": "pkg:gem/resolv",
|
|
"product": "resolv",
|
|
"vendor": "Ruby",
|
|
"versions": [
|
|
{
|
|
"lessThan": "0.3.2",
|
|
"status": "affected",
|
|
"version": "0",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"lessThan": "0.7.2",
|
|
"status": "affected",
|
|
"version": "0.4.0",
|
|
"versionType": "semver"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::Resource.get_class, Resolv::DNS::Resource::Generic.create, and Resolv::DNS::SvcParam::Generic.create generate a new class for each unknown DNS resource record (type, class) pair, or each unknown SvcParamKey, encountered while decoding a response. Each generated class was permanently registered both as a constant on Resource (or SvcParam::Generic) and as an entry in a class-lookup hash (ClassHash), and thus the class remained reachable through that constant after the response was discarded. Type and class are each 16-bit values, and thus an attacker controlling DNS responses (a spoofed response, or a malicious or hijacked upstream DNS server) has roughly 2^32 distinct (type, class) pairs to choose from. A single response of a few hundred kilobytes carrying tens of thousands of distinct unknown types permanently grows process memory by tens of megabytes; repeated responses accumulate without bound and are never reclaimed by garbage collection, because the constant keeps each class alive. Any code path that calls Resolv::DNS::Message.decode on attacker-influenced DNS responses is affected. resolv is a default gem, and thus this is reachable from a plain Ruby installation without any additional dependency."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"attackComplexity": "LOW",
|
|
"attackVector": "NETWORK",
|
|
"availabilityImpact": "HIGH",
|
|
"baseScore": 7.5,
|
|
"baseSeverity": "HIGH",
|
|
"confidentialityImpact": "NONE",
|
|
"integrityImpact": "NONE",
|
|
"privilegesRequired": "NONE",
|
|
"scope": "UNCHANGED",
|
|
"userInteraction": "NONE",
|
|
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
|
|
"version": "3.1"
|
|
},
|
|
"format": "CVSS",
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "GENERAL"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-770",
|
|
"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
|
|
"lang": "en",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
|
|
"shortName": "mitre",
|
|
"dateUpdated": "2026-08-27T14:15:04.403Z"
|
|
},
|
|
"references": [
|
|
{
|
|
"url": "https://github.com/ruby/resolv"
|
|
},
|
|
{
|
|
"url": "https://www.ruby-lang.org/en/news/2026/08/27/multiple-vulnerabilities-in-resolv/"
|
|
}
|
|
],
|
|
"x_generator": {
|
|
"engine": "CVE-Request-form 0.0.1"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-08-27T19:33:50.602678Z",
|
|
"id": "CVE-2026-80212",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "yes"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-08-27T19:33:58.773Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |