213 lines
11 KiB
JSON
213 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.1",
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"cveMetadata": {
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"cveId": "CVE-2022-4149",
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"assignerOrgId": "bf992f6a-e49d-4e94-9479-c4cff32c62bc",
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"state": "PUBLISHED",
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"assignerShortName": "Netskope",
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"dateReserved": "2022-11-28T12:19:11.243Z",
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"datePublished": "2023-06-15T06:44:25.434Z",
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"dateUpdated": "2024-12-12T17:05:07.261Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"defaultStatus": "unaffected",
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"platforms": [
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"Windows"
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],
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"product": "Netskope Client",
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"vendor": "Netskope",
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"versions": [
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{
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"status": "affected",
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"version": "95, 0"
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}
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "finder",
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"user": "00000000-0000-4000-9000-000000000000",
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"value": "Netskope credits Dawson Medin from Mandiant for reporting this flaw."
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}
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],
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"datePublic": "2023-06-15T06:24:00.000Z",
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<span style=\"background-color: rgb(255, 255, 255);\">The Netskope client service (prior to R96) on Windows runs as NT AUTHORITY\\SYSTEM which writes log files to a writable directory (C:\\Users\\Public\\netSkope) for a standard user. The files are created and written with a SYSTEM account except one file (logplaceholder) which inherits permission giving all users full access control list. Netskope client restricts access to this file by allowing only read permissions as a standard user. Whenever the Netskope client service restarts, it deletes the logplaceholder and recreates, creating a race condition, which can be exploited by a malicious local user to create the file and set ACL permissions on the file. Once the file is created by a malicious user with proper ACL permissions, all files within C:\\Users\\Public\\netSkope\\ becomes modifiable by the unprivileged user. By using Windows pseudo-symlink, these files can be pointed to other places in the system and thus malicious users will be able to elevate privileges.</span><br>"
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}
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],
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"value": "The Netskope client service (prior to R96) on Windows runs as NT AUTHORITY\\SYSTEM which writes log files to a writable directory (C:\\Users\\Public\\netSkope) for a standard user. The files are created and written with a SYSTEM account except one file (logplaceholder) which inherits permission giving all users full access control list. Netskope client restricts access to this file by allowing only read permissions as a standard user. Whenever the Netskope client service restarts, it deletes the logplaceholder and recreates, creating a race condition, which can be exploited by a malicious local user to create the file and set ACL permissions on the file. Once the file is created by a malicious user with proper ACL permissions, all files within C:\\Users\\Public\\netSkope\\ becomes modifiable by the unprivileged user. By using Windows pseudo-symlink, these files can be pointed to other places in the system and thus malicious users will be able to elevate privileges.\n"
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}
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],
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"exploits": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Netskope is not aware of any public disclosure and exploitation of this vulnerability at the time of publication. </p>"
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}
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],
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"value": "Netskope is not aware of any public disclosure and exploitation of this vulnerability at the time of publication. \n\n"
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-233",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-233 Privilege Escalation"
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}
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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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"cvssV3_1": {
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"attackComplexity": "HIGH",
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"attackVector": "LOCAL",
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"availabilityImpact": "HIGH",
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"baseScore": 7,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"version": "3.1"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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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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"cweId": "CWE-367",
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"description": "CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "bf992f6a-e49d-4e94-9479-c4cff32c62bc",
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"shortName": "Netskope",
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"dateUpdated": "2023-06-15T06:44:27.310Z"
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},
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"references": [
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{
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"url": "https://www.netskope.com/company/security-compliance-and-assurance/security-advisories-and-disclosures/netskope-security-advisory-nskpsa-2023-002"
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}
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],
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"solutions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<span style=\"background-color: rgb(255, 255, 255);\">Netskope has patched the vulnerability and released a binary with a fix. Customers are recommended to upgrade their Netskope clients to v100 or later. Netskope download Instructions – </span><a target=\"_blank\" rel=\"nofollow\" href=\"https://support.netskope.com/s/article/Download-Netskope-Client-and-Scripts\">Download Netskope Client and Scripts – Netskope Support</a><br>"
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}
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],
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"value": "Netskope has patched the vulnerability and released a binary with a fix. Customers are recommended to upgrade their Netskope clients to v100 or later. Netskope download Instructions – Download Netskope Client and Scripts – Netskope Support https://support.netskope.com/s/article/Download-Netskope-Client-and-Scripts \n"
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}
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],
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"source": {
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"advisory": "NSKPSA-2023-002",
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"defect": [
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"NSKPSA-2023-002"
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],
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"discovery": "EXTERNAL"
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},
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"title": "Local privilege escalation using log file",
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"workarounds": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "Netskope recommends using hardening guidelines listed here - <span style=\"background-color: rgb(255, 255, 255);\">– </span><a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.netskope.com/en/netskope-client-hardening.html\">https://docs.netskope.com/en/netskope-client-hardening.html</a> <br>"
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}
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],
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"value": "Netskope recommends using hardening guidelines listed here - – https://docs.netskope.com/en/netskope-client-hardening.html https://docs.netskope.com/en/netskope-client-hardening.html \n"
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}
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],
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"x_generator": {
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"engine": "Vulnogram 0.1.0-dev"
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}
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},
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"adp": [
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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": "2024-08-03T01:27:54.588Z"
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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://www.netskope.com/company/security-compliance-and-assurance/security-advisories-and-disclosures/netskope-security-advisory-nskpsa-2023-002",
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"tags": [
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"x_transferred"
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]
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}
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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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"timestamp": "2024-12-12T17:04:43.872061Z",
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"id": "CVE-2022-4149",
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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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"role": "CISA Coordinator",
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"version": "2.0.3"
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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": "2024-12-12T17:05:07.261Z"
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}
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}
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]
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}
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} |