246 lines
12 KiB
JSON
246 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-2022-49622",
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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": "2025-02-26T02:21:30.420Z",
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"datePublished": "2025-02-26T02:23:39.341Z",
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"dateUpdated": "2026-10-30T12:17:07.220Z"
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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": "2026-10-30T12:17:07.220Z"
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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\nnetfilter: nf_tables: avoid skb access on nf_stolen\n\nWhen verdict is NF_STOLEN, the skb might have been freed.\n\nWhen tracing is enabled, this can result in a use-after-free:\n1. access to skb->nf_trace\n2. access to skb->mark\n3. computation of trace id\n4. dump of packet payload\n\nTo avoid 1, keep a cached copy of skb->nf_trace in the\ntrace state struct.\nRefresh this copy whenever verdict is != STOLEN.\n\nAvoid 2 by skipping skb->mark access if verdict is STOLEN.\n\n3 is avoided by precomputing the trace id.\n\nOnly dump the packet when verdict is not \"STOLEN\"."
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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:H/A:H",
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"baseScore": 7.8,
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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 bug is reached by configuring nf_tables rules over netlink and triggering them in a local network namespace; nftables/netfilter is scored as Local, not remotely exploitable by itself.\nAC:L - An attacker who can install rules fully controls enabling nftrace and a STOLEN path (e.g. synproxy/fwd that consume_skb), then triggers the UAF synchronously on a locally generated packet with no race or external conditions.\nPR:L - nfnetlink requires CAP_NET_ADMIN, but that capability is obtainable in an unprivileged user+network namespace (unshare -Urn), so privileges required are Low rather than High.\nUI:N - No victim action is needed; the attacker installs the rules and sends packets that hit the chain themselves.\nS:U - This is a standard in-kernel use-after-free enabling local privilege escalation within the same OS security authority, not a VM/IOMMU/sandbox boundary escape.\nC:H - Use-after-free of the skb allows reading freed slab memory (including via nft_trace_notify packet/header dumps to netlink), which per guidance is High confidentiality impact.\nI:H - A kernel skb UAF is heap-corruptible via spraying and can yield write/control-flow primitives, so integrity impact is High.\nA:H - Accessing the freed skb in the tracing path can cause kernel oops/panic or otherwise crash the system, so availability impact is High."
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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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"include/net/netfilter/nf_tables.h",
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"net/netfilter/nf_tables_core.c",
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"net/netfilter/nf_tables_trace.c"
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],
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"versions": [
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{
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"version": "5efa0fc6d7f7930b18801f07cefae8eeacd6ac02",
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"lessThan": "348218a4601e93de4d1e9fab29837cf656e4bf99",
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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": "5efa0fc6d7f7930b18801f07cefae8eeacd6ac02",
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"lessThan": "453a67af8bd77463b33cb0336dd7f2341e332d29",
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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": "5efa0fc6d7f7930b18801f07cefae8eeacd6ac02",
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"lessThan": "0016d5d46d7440729a3132f61a8da3bf7f84e2ba",
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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": "5efa0fc6d7f7930b18801f07cefae8eeacd6ac02",
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"lessThan": "e34b9ed96ce3b06c79bf884009b16961ca478f87",
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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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"include/net/netfilter/nf_tables.h",
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"net/netfilter/nf_tables_core.c",
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"net/netfilter/nf_tables_trace.c"
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],
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"versions": [
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{
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"version": "4.10",
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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": "4.10",
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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": "5.10.273",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.224",
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"lessThanOrEqual": "5.15.*",
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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": "5.18.13",
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"lessThanOrEqual": "5.18.*",
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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": "5.19",
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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": "4.10",
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"versionEndExcluding": "5.10.273"
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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": "4.10",
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"versionEndExcluding": "5.15.224"
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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": "4.10",
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"versionEndExcluding": "5.18.13"
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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": "4.10",
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"versionEndExcluding": "5.19"
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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/348218a4601e93de4d1e9fab29837cf656e4bf99"
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},
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{
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"url": "https://git.kernel.org/stable/c/453a67af8bd77463b33cb0336dd7f2341e332d29"
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},
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{
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"url": "https://git.kernel.org/stable/c/0016d5d46d7440729a3132f61a8da3bf7f84e2ba"
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},
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{
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"url": "https://git.kernel.org/stable/c/e34b9ed96ce3b06c79bf884009b16961ca478f87"
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}
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],
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"title": "netfilter: nf_tables: avoid skb access on nf_stolen",
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "HIGH"
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}
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},
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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-2022-49622",
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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": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2025-02-27T18:15:30.357017Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-416",
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"description": "CWE-416 Use After Free"
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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": "2025-02-27T18:22:31.702Z"
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}
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}
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]
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}
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} |