214 lines
12 KiB
JSON
214 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-2024-47714",
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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": "2024-09-30T16:00:12.948Z",
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"datePublished": "2024-10-21T11:53:46.090Z",
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"dateUpdated": "2026-08-05T11:39:40.668Z"
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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": "2026-08-05T11:39:40.668Z"
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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\nwifi: mt76: mt7996: use hweight16 to get correct tx antenna\n\nThe chainmask is u16 so using hweight8 cannot get correct tx_ant.\nWithout this patch, the tx_ant of band 2 would be -1 and lead to the\nfollowing issue:\nBUG: KASAN: stack-out-of-bounds in mt7996_mcu_add_sta+0x12e0/0x16e0 [mt7996e]"
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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:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
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"baseScore": 7.6,
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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:A - The vulnerable path is entered from mac80211 station insertion driven by an over-the-air association from a nearby 802.11 peer, with the trigger conditions (EHT/HE/VHT beamforming capability bits, bandwidth, MCS/NSS fields) taken straight from the attacker's association request. This requires radio proximity to the AP's 6 GHz band rather than routable network access, which is Adjacent per the WiFi frame-injection guidance.\nAC:L - On the affected hardware the miscount is deterministic — band 2's chainmask sits entirely above bit 7, so hweight8() always returns 0 and tx_ant is always -1 — and the attacker simply associates while advertising SU-beamformee support to reach matrix[-1][ncol] every time. There is no race, no memory-layout requirement, and the attempt can be repeated indefinitely by re-associating.\nPR:N - In AP mode hostapd creates the station object at association, before the 4-way handshake or any credential validation, so mt7996_mac_sta_add() → mt7996_mcu_sta_bfer_tlv() runs for an attacker holding no key and no account on the target. Open and mesh/IBSS deployments have no authentication gate at all.\nUI:N - The attacker performs the association itself and the AP's kernel processes it automatically; no action by any user or administrator on the victim system is needed.\nS:U - The out-of-bounds read and the resulting bogus firmware-command fields stay within the kernel driver's own security authority, crossing no VM, IOMMU, or sandbox boundary.\nC:L - matrix[-1][ncol] reads adjacent kernel stack memory outside the const array, exposing stack contents that are then written into the sta_rec_bf TLV and transmitted to the WiFi firmware. The read is strictly bounded to the four bytes immediately preceding a 16-byte object at a fixed negative offset with no attacker-directed address and no channel returning the data over the air, so it is a small bounded leak rather than arbitrary read.\nI:L - The uninitialized out-of-bounds byte and the underflowed antenna count (ibf_nrow = 0xFF, mem_20m/mem_total derived from stray stack data) are programmed into the chip's beamforming profile via the MCU STA_REC_UPDATE command, a remotely-influenced corruption of device configuration state. No kernel memory is written out of bounds and no control-flow influence is available, so the modification is limited rather than arbitrary.\nA:H - The condition is a KASAN-detected stack-out-of-bounds in mt7996_mcu_add_sta(), which oopses and panics outright on kernels built with KASAN plus panic_on_warn or kasan.fault=panic — common in vendor and hardened builds. Independently, feeding out-of-range beamforming memory parameters and a 0xFF antenna count to the WiFi MCU can wedge the firmware and take the radio down, and the attacker can retrigger it on every association."
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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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"drivers/net/wireless/mediatek/mt76/mt7996/mcu.c"
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],
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"versions": [
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{
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"version": "98686cd21624c75a043e96812beadddf4f6f48e5",
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"lessThan": "50d87e3b70980abc090676b6b4703fcbd96221f9",
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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": "98686cd21624c75a043e96812beadddf4f6f48e5",
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"lessThan": "8f51fc8a9e2fd96363d8ec3f4ee4b78dd64754e3",
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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": "98686cd21624c75a043e96812beadddf4f6f48e5",
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"lessThan": "33954930870c18ec549e4bca0eeff43e252cb740",
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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": "98686cd21624c75a043e96812beadddf4f6f48e5",
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"lessThan": "f98c3de92bb05dac4a4969df8a4595ed380b4604",
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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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"drivers/net/wireless/mediatek/mt76/mt7996/mcu.c"
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],
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"versions": [
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{
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"version": "6.2",
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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": "6.2",
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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": "6.6.54",
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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": "6.10.13",
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"lessThanOrEqual": "6.10.*",
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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": "6.11.2",
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"lessThanOrEqual": "6.11.*",
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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": "6.12",
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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": "6.2",
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"versionEndExcluding": "6.6.54"
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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": "6.2",
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"versionEndExcluding": "6.10.13"
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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": "6.2",
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"versionEndExcluding": "6.11.2"
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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": "6.2",
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"versionEndExcluding": "6.12"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/50d87e3b70980abc090676b6b4703fcbd96221f9"
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},
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{
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"url": "https://git.kernel.org/stable/c/8f51fc8a9e2fd96363d8ec3f4ee4b78dd64754e3"
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},
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{
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"url": "https://git.kernel.org/stable/c/33954930870c18ec549e4bca0eeff43e252cb740"
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},
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{
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"url": "https://git.kernel.org/stable/c/f98c3de92bb05dac4a4969df8a4595ed380b4604"
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}
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],
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"title": "wifi: mt76: mt7996: use hweight16 to get correct tx antenna",
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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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"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-2024-47714",
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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": "2024-10-21T13:02:52.416293Z"
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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": "2024-10-21T13:04:18.545Z"
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}
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}
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]
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}
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} |