235 lines
12 KiB
JSON
235 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-2022-49025",
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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": "2024-08-22T01:27:53.650Z",
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"datePublished": "2024-10-21T20:06:31.189Z",
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"dateUpdated": "2026-08-05T08:53:31.402Z"
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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": "2026-08-05T08:53:31.402Z"
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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\nnet/mlx5e: Fix use-after-free when reverting termination table\n\nWhen having multiple dests with termination tables and second one\nor afterwards fails the driver reverts usage of term tables but\ndoesn't reset the assignment in attr->dests[num_vport_dests].termtbl\nwhich case a use-after-free when releasing the rule.\nFix by resetting the assignment of termtbl to null."
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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 installing/deleting a TC flower rule via rtnetlink (tc_new_tfilter → mlx5e_configure_flower → mlx5_eswitch_add_offloaded_rule → mlx5_eswitch_add_termtbl_rule), which is a local netlink/syscall path, not remote packet processing.\nAC:L - An attacker who can add multi-destination VLAN-push/hairpin TC flower rules can force the revert path (e.g., by exhausting memory so a later termtbl get_create fails) and then delete the successfully fallback-installed rule; this is a deterministic error-path UAF with no race outside attacker control.\nPR:L - Creating and deleting these TC flower filters requires CAP_NET_ADMIN checked via netlink_net_capable()/ns_capable() in the network namespace's user_ns, which is obtainable through user namespaces (unshare -Urn), matching prior mlx5e FDB TC scoring (e.g., CVE-2023-52487).\nUI:N - No victim interaction is required; the attacker installs the multi-dest termination-table rule and later deletes it entirely on their own.\nS:U - Impact is confined to the host kernel that owns the mlx5 eswitch offload state; this is a same-authority kernel UAF with no VM escape, IOMMU bypass, or other cross-boundary effect.\nC:H - On rule release, __mlx5_eswitch_del_rule calls mlx5_eswitch_termtbl_put() on the dangling attr->dests[].termtbl pointer after the handle was already freed during revert, yielding a classic heap UAF that enables arbitrary kernel memory disclosure.\nI:H - The same use-after-free of mlx5_termtbl_handle allows heap spray/reclaim and corruption of subsequent allocations, providing write and control-flow hijack primitives suitable for privilege escalation.\nA:H - Any use-after-free is treated as high availability impact; exercising the dangling termtbl pointer on rule teardown can oops/panic the kernel even when not fully exploited for code execution."
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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/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c"
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],
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"versions": [
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{
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"version": "10caabdaad5ace85577a453da97d1f8d3b944427",
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"lessThan": "0a2d73a77060c3cbdc6e801cd5d979d674cd404b",
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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": "10caabdaad5ace85577a453da97d1f8d3b944427",
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"lessThan": "0d2f9d95d9fbe993f3c4bafb87d59897b0325aff",
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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": "10caabdaad5ace85577a453da97d1f8d3b944427",
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"lessThan": "372eb550faa0757349040fd43f59483cbfdb2c0b",
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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": "10caabdaad5ace85577a453da97d1f8d3b944427",
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"lessThan": "e6d2d26a49c3a9cd46b232975e45236304810904",
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"status": "affected",
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"versionType": "git"
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},
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{
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"lessThan": "52c795af04441d76f565c4634f893e5b553df2ae",
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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/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c"
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],
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"versions": [
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{
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"version": "5.3",
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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": "5.3",
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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": "5.4.226",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.158",
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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": "5.15.82",
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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": "6.0.12",
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"lessThanOrEqual": "6.0.*",
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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",
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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": "5.3",
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"versionEndExcluding": "5.4.226"
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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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"versionEndExcluding": "6.0.12"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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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/0a2d73a77060c3cbdc6e801cd5d979d674cd404b"
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},
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{
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"url": "https://git.kernel.org/stable/c/0d2f9d95d9fbe993f3c4bafb87d59897b0325aff"
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},
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{
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"url": "https://git.kernel.org/stable/c/372eb550faa0757349040fd43f59483cbfdb2c0b"
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},
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{
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"url": "https://git.kernel.org/stable/c/e6d2d26a49c3a9cd46b232975e45236304810904"
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},
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{
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"url": "https://git.kernel.org/stable/c/52c795af04441d76f565c4634f893e5b553df2ae"
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}
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],
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"title": "net/mlx5e: Fix use-after-free when reverting termination table",
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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-2022-49025",
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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": "2024-10-22T13:12:03.785297Z"
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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": "2024-10-22T13:18:36.599Z"
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}
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}
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]
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}
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} |