214 lines
11 KiB
JSON
214 lines
11 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-2022-49017",
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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": "2024-08-22T01:27:53.646Z",
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"datePublished": "2024-10-21T20:06:25.971Z",
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"dateUpdated": "2026-08-05T08:53:28.139Z"
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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": "2026-08-05T08:53:28.139Z"
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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\ntipc: re-fetch skb cb after tipc_msg_validate\n\nAs the call trace shows, the original skb was freed in tipc_msg_validate(),\nand dereferencing the old skb cb would cause an use-after-free crash.\n\n BUG: KASAN: use-after-free in tipc_crypto_rcv_complete+0x1835/0x2240 [tipc]\n Call Trace:\n <IRQ>\n tipc_crypto_rcv_complete+0x1835/0x2240 [tipc]\n tipc_crypto_rcv+0xd32/0x1ec0 [tipc]\n tipc_rcv+0x744/0x1150 [tipc]\n ...\n Allocated by task 47078:\n kmem_cache_alloc_node+0x158/0x4d0\n __alloc_skb+0x1c1/0x270\n tipc_buf_acquire+0x1e/0xe0 [tipc]\n tipc_msg_create+0x33/0x1c0 [tipc]\n tipc_link_build_proto_msg+0x38a/0x2100 [tipc]\n tipc_link_timeout+0x8b8/0xef0 [tipc]\n tipc_node_timeout+0x2a1/0x960 [tipc]\n call_timer_fn+0x2d/0x1c0\n ...\n Freed by task 47078:\n tipc_msg_validate+0x7b/0x440 [tipc]\n tipc_crypto_rcv_complete+0x4b5/0x2240 [tipc]\n tipc_crypto_rcv+0xd32/0x1ec0 [tipc]\n tipc_rcv+0x744/0x1150 [tipc]\n\nThis patch fixes it by re-fetching the skb cb from the new allocated skb\nafter calling tipc_msg_validate()."
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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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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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:N - The vulnerable path is tipc_udp_recv/tipc_l2_rcv_msg → tipc_rcv → tipc_crypto_rcv → tipc_crypto_rcv_complete, reached by processing encrypted TIPC packets from a remote peer over UDP or Ethernet bearers.\nAC:L - A peer who can send valid encrypted TIPC messages reliably drives the decrypt-complete path; the tipc_msg_validate skb replacement triggers on common high-truesize RX buffers (e.g. page-backed skbs), with no race beyond attacker control.\nPR:L - Successful AEAD decryption is required before tipc_msg_validate and the UAF write, so the attacker must possess the cluster/node TIPC encryption key as an authenticated peer, but needs no elevated OS privileges on the victim.\nUI:N - Exploitation is fully driven by attacker-sent encrypted packets; no victim user action is required once a TIPC bearer with crypto is configured and running.\nS:U - This is standard in-kernel memory corruption within the host TIPC stack and does not cross a VM, IOMMU, or other security authority boundary.\nC:H - Use-after-free of the skb control block enables heap reuse and attacker-controlled object contents, which can be leveraged for arbitrary kernel memory disclosure.\nI:H - The bug writes to freed skb->cb (decrypted flag and possibly tx_clone_ctx memset), giving a UAF write primitive exploitable for corruption and control-flow hijacking.\nA:H - The KASAN report shows a use-after-free crash in IRQ context; the UAF can cause kernel oops/panic and denial of service 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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"net/tipc/crypto.c"
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],
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"versions": [
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{
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"version": "fc1b6d6de2208774efd2a20bf0daddb02d18b1e0",
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"lessThan": "a1ba595e35aa3afbe417ff0af353afb9f65559c0",
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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": "fc1b6d6de2208774efd2a20bf0daddb02d18b1e0",
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"lessThan": "1daec0815655e110c6f206c5e777a4af8168ff58",
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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": "fc1b6d6de2208774efd2a20bf0daddb02d18b1e0",
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"lessThan": "e128190adb2edfd5042105b5d1ed4553f295f5ef",
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"status": "affected",
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{
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"version": "fc1b6d6de2208774efd2a20bf0daddb02d18b1e0",
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"lessThan": "3067bc61fcfe3081bf4807ce65560f499e895e77",
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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/tipc/crypto.c"
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],
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"versions": [
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{
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"version": "5.5",
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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": "5.5",
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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": "5.5",
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"versionEndExcluding": "5.10.158"
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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": "5.5",
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"versionEndExcluding": "5.15.82"
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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": "5.5",
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"versionEndExcluding": "6.0.12"
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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": "5.5",
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"versionEndExcluding": "6.1"
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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/a1ba595e35aa3afbe417ff0af353afb9f65559c0"
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},
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{
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"url": "https://git.kernel.org/stable/c/1daec0815655e110c6f206c5e777a4af8168ff58"
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},
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{
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"url": "https://git.kernel.org/stable/c/e128190adb2edfd5042105b5d1ed4553f295f5ef"
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},
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{
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"url": "https://git.kernel.org/stable/c/3067bc61fcfe3081bf4807ce65560f499e895e77"
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}
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],
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"title": "tipc: re-fetch skb cb after tipc_msg_validate",
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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-2022-49017",
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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": "2024-10-22T13:13:05.882492Z"
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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": "2024-10-22T13:18:37.715Z"
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}
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}
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]
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}
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} |