239 lines
12 KiB
JSON
239 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2024-35963",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-05-17T13:50:33.137Z",
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"datePublished": "2024-05-20T09:41:53.861Z",
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"dateUpdated": "2026-08-05T11:31:15.289Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:31:15.289Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sock: Fix not validating setsockopt user input\n\nCheck user input length before copying data."
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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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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The flaw is reached purely through setsockopt(2)/getsockopt(2) on a locally created AF_BLUETOOTH/BTPROTO_HCI socket; no Bluetooth radio traffic, paired peer, or HCI adapter link participates in reaching the unvalidated copy.\nAC:L - Triggering is fully deterministic — issue setsockopt(fd, SOL_HCI, HCI_DATA_DIR, buf, optlen<4) or setsockopt(fd, SOL_BLUETOOTH, BT_SNDMTU, buf, optlen<2); there is no race, no timing window, and the attacker can groom the kmalloc-8/16 slab to choose what sits past the allocation.\nPR:L - bt_sock_create() and hci_sock_create() contain no capability check and the socket defaults to HCI_CHANNEL_RAW, so any unprivileged local user reaches hci_sock_setsockopt_old() with no bind and no caps; CAP_NET_RAW only narrows the filter masks, and HCI_CHANNEL_CONTROL binding for the BT_SNDMTU path is explicitly allowed for untrusted users.\nUI:N - The attacker performs every step on its own socket — create, bind, setsockopt, getsockopt; no victim action, mount, or file open is required.\nS:U - The out-of-bounds access stays within kernel slab memory under the same security authority, crossing no VM, IOMMU, or sandbox boundary.\nC:H - This is an out-of-bounds read of kernel heap memory past the end of the exact-size kernel_optval allocation, and the disclosed bytes flow straight back to userspace — hci_sock_getsockopt() put_user()s hci_pi(sk)->mtu verbatim, yielding a repeatable 16-bit kernel-heap oracle (plus a bit-oracle via HCI_DATA_DIR/HCI_TIME_STAMP) usable with heap grooming to leak kernel data and defeat KASLR.\nI:N - Nothing is written out of bounds; the only state changed is the attacker's own socket cmsg_mask, filter, and mtu, all of which are settable through the normal API anyway, so no data outside the attacker's authority is modified.\nA:H - The slab out-of-bounds read raises a KASAN BUG that panics outright under the widely deployed panic_on_warn configuration, and the read can fault when it crosses into a KFENCE guard page or unmapped page, producing a kernel oops that an unprivileged local user can repeat at will."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/bluetooth/hci_sock.c"
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],
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"versions": [
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{
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"version": "09572fca7223bcf32c9f0d5e100d8381a81d55f4",
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"lessThan": "781f3a97a38a338bc893b6db7f9f9670bf1a9e37",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "09572fca7223bcf32c9f0d5e100d8381a81d55f4",
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"lessThan": "0c18a64039aa3f1c16f208d197c65076da798137",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "09572fca7223bcf32c9f0d5e100d8381a81d55f4",
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"lessThan": "50173882bb187e70e37bac01385b9b114019bee2",
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"status": "affected",
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{
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"version": "09572fca7223bcf32c9f0d5e100d8381a81d55f4",
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"lessThan": "b2186061d6043d6345a97100460363e990af0d46",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/bluetooth/hci_sock.c"
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],
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"versions": [
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{
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"version": "5.16",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.16",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.113",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.55",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.8.7",
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"lessThanOrEqual": "6.8.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.9",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
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"versionEndExcluding": "6.1.113"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/781f3a97a38a338bc893b6db7f9f9670bf1a9e37"
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},
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{
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"url": "https://git.kernel.org/stable/c/0c18a64039aa3f1c16f208d197c65076da798137"
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{
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"url": "https://git.kernel.org/stable/c/50173882bb187e70e37bac01385b9b114019bee2"
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"url": "https://git.kernel.org/stable/c/b2186061d6043d6345a97100460363e990af0d46"
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}
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],
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"title": "Bluetooth: hci_sock: Fix not validating setsockopt user input",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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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://git.kernel.org/stable/c/50173882bb187e70e37bac01385b9b114019bee2",
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"tags": [
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{
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]
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},
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
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}
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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": "2025-11-03T21:55:05.767Z"
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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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"id": "CVE-2024-35963",
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"role": "CISA Coordinator",
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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": "no"
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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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"version": "2.0.3",
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"timestamp": "2024-09-10T15:40:29.376948Z"
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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": "2024-09-11T17:33:13.806Z"
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}
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}
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]
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}
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} |