218 lines
9.4 KiB
JSON
218 lines
9.4 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.1",
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"cveMetadata": {
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"cveId": "CVE-2023-2911",
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"assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
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"state": "PUBLISHED",
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"assignerShortName": "isc",
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"dateReserved": "2023-05-26T11:20:45.872Z",
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"datePublished": "2023-06-21T16:26:36.587Z",
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"dateUpdated": "2025-02-13T16:49:00.351Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
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"shortName": "isc",
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"dateUpdated": "2023-07-03T15:06:21.382Z"
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},
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"title": "Exceeding the recursive-clients quota may cause named to terminate unexpectedly when stale-answer-client-timeout is set to 0",
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"datePublic": "2023-06-21T00:00:00.000Z",
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"affected": [
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{
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"vendor": "ISC",
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"product": "BIND 9",
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"versions": [
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{
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"version": "9.16.33",
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"lessThanOrEqual": "9.16.41",
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"status": "affected",
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"versionType": "custom"
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},
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{
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"version": "9.18.7",
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"lessThanOrEqual": "9.18.15",
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"status": "affected",
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"versionType": "custom"
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},
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{
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"version": "9.16.33-S1",
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"lessThanOrEqual": "9.16.41-S1",
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"status": "affected",
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"versionType": "custom"
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},
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{
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"version": "9.18.11-S1",
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"lessThanOrEqual": "9.18.15-S1",
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"status": "affected",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unaffected"
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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}
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "If the `recursive-clients` quota is reached on a BIND 9 resolver configured with both `stale-answer-enable yes;` and `stale-answer-client-timeout 0;`, a sequence of serve-stale-related lookups could cause `named` to loop and terminate unexpectedly due to a stack overflow.\nThis issue affects BIND 9 versions 9.16.33 through 9.16.41, 9.18.7 through 9.18.15, 9.16.33-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1."
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}
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],
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"impacts": [
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{
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"descriptions": [
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{
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"lang": "en",
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"value": "By sending specific queries to the resolver, an attacker can cause `named` to terminate unexpectedly."
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}
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]
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}
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],
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"workarounds": [
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{
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"lang": "en",
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"value": "Setting `stale-answer-client-timeout` to `off` or to a non-zero value prevents the issue.\n\nUsers of versions 9.18.10, 9.16.36, 9.16.36-S1 or older who are unable to upgrade should set `stale-answer-client-timeout` to `off`; using a non-zero value with these older versions leaves `named` vulnerable to CVE-2022-3924.\n\nAlthough it is possible to set the `recursive-clients` limit to a high number to reduce the likelihood of this scenario, this is not recommended; the limit on `recursive-clients` is important for preventing exhaustion of server resources. The limit cannot be disabled entirely."
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}
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],
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"exploits": [
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{
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"lang": "en",
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"value": "This flaw was discovered in internal testing. We are not aware of any active exploits."
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "Upgrade to the patched release most closely related to your current version of BIND 9: 9.16.42, 9.18.16, 9.16.42-S1, or 9.18.16-S1."
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}
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],
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"references": [
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{
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"url": "https://kb.isc.org/docs/cve-2023-2911",
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"name": "CVE-2023-2911",
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"tags": [
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"vendor-advisory"
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]
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},
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{
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"url": "http://www.openwall.com/lists/oss-security/2023/06/21/6"
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},
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{
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3K6AJK7RRSR53HRF5GGKPA6PDUDWOD2/"
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},
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{
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"url": "https://www.debian.org/security/2023/dsa-5439"
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},
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{
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/"
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},
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{
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"url": "https://security.netapp.com/advisory/ntap-20230703-0010/"
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}
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],
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"source": {
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"discovery": "INTERNAL"
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}
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},
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"adp": [
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{
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2024-08-02T06:41:03.760Z"
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},
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://kb.isc.org/docs/cve-2023-2911",
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"name": "CVE-2023-2911",
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"tags": [
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"vendor-advisory",
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"x_transferred"
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]
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},
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{
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"url": "http://www.openwall.com/lists/oss-security/2023/06/21/6",
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"tags": [
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"x_transferred"
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]
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},
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{
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3K6AJK7RRSR53HRF5GGKPA6PDUDWOD2/",
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"tags": [
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"x_transferred"
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]
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},
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{
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"url": "https://www.debian.org/security/2023/dsa-5439",
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"tags": [
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"x_transferred"
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]
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},
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{
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/",
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"tags": [
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"x_transferred"
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]
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},
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{
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"url": "https://security.netapp.com/advisory/ntap-20230703-0010/",
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"tags": [
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"x_transferred"
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]
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}
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]
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},
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-12-06T18:32:18.833805Z",
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"id": "CVE-2023-2911",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-12-06T18:32:26.092Z"
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}
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}
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]
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}
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} |