239 lines
11 KiB
JSON
239 lines
11 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-2023-2828",
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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": "2023-05-22T07:57:41.362Z",
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"datePublished": "2023-06-21T16:26:07.096Z",
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"dateUpdated": "2025-02-13T16:48:38.124Z"
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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": "2023-07-19T11:06:10.654Z"
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},
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"title": "named's configured cache size limit can be significantly exceeded",
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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": "9.11.0",
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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": "9.18.0",
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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": "9.19.0",
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"lessThanOrEqual": "9.19.13",
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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": "9.11.3-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": "Every `named` instance configured to run as a recursive resolver maintains a cache database holding the responses to the queries it has recently sent to authoritative servers. The size limit for that cache database can be configured using the `max-cache-size` statement in the configuration file; it defaults to 90% of the total amount of memory available on the host. When the size of the cache reaches 7/8 of the configured limit, a cache-cleaning algorithm starts to remove expired and/or least-recently used RRsets from the cache, to keep memory use below the configured limit.\n\nIt has been discovered that the effectiveness of the cache-cleaning algorithm used in `named` can be severely diminished by querying the resolver for specific RRsets in a certain order, effectively allowing the configured `max-cache-size` limit to be significantly exceeded.\nThis issue affects BIND 9 versions 9.11.0 through 9.16.41, 9.18.0 through 9.18.15, 9.19.0 through 9.19.13, 9.11.3-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 exploiting this flaw, an attacker can cause the amount of memory used by a `named` resolver to go well beyond the configured `max-cache-size` limit. The effectiveness of the attack depends on a number of factors (e.g. query load, query patterns), but since the default value of the `max-cache-size` statement is `90%`, in the worst case the attacker can exhaust all available memory on the host running `named`, leading to a denial-of-service condition."
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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": "No workarounds known."
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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": "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, 9.19.14, 9.16.42-S1, or 9.18.16-S1."
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "ISC would like to thank Shoham Danino from Reichman University, Anat Bremler-Barr from Tel-Aviv University, Yehuda Afek from Tel-Aviv University, and Yuval Shavitt from Tel-Aviv University for bringing this vulnerability to our attention."
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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-2023-2828",
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"name": "CVE-2023-2828",
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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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"url": "https://lists.debian.org/debian-lts-announce/2023/07/msg00021.html"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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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": "2024-08-02T06:33:05.796Z"
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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-2023-2828",
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"name": "CVE-2023-2828",
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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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"url": "https://lists.debian.org/debian-lts-announce/2023/07/msg00021.html",
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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": "2024-12-06T18:36:28.183787Z",
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"id": "CVE-2023-2828",
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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": "2024-12-06T18:36:35.647Z"
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}
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}
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]
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}
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} |