{"api_version":"1","generated_at":"2026-05-07T16:42:17+00:00","cve":"CVE-2022-4149","urls":{"html":"https://cve.report/CVE-2022-4149","api":"https://cve.report/api/cve/CVE-2022-4149.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-4149","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-4149"},"summary":{"title":"CVE-2022-4149","description":"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.","state":"PUBLIC","assigner":"psirt@netskope.com","published_at":"2023-06-15 07:15:00","updated_at":"2023-06-30 00:08:00"},"problem_types":["CWE-367"],"metrics":[],"references":[{"url":"https://www.netskope.com/company/security-compliance-and-assurance/security-advisories-and-disclosures/netskope-security-advisory-nskpsa-2023-002","name":"https://www.netskope.com/company/security-compliance-and-assurance/security-advisories-and-disclosures/netskope-security-advisory-nskpsa-2023-002","refsource":"MISC","tags":[],"title":"NSKPSA-2023-002 - Netskope","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-4149","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-4149","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2022","cve_id":"4149","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"4149","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"netskope","cpe5":"netskope","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2022-4149","ASSIGNER":"psirt@netskope.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","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"}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition","cweId":"CWE-367"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"Netskope","product":{"product_data":[{"product_name":"Netskope Client","version":{"version_data":[{"version_affected":"=","version_value":"95, 0"}]}}]}}]}},"references":{"reference_data":[{"url":"https://www.netskope.com/company/security-compliance-and-assurance/security-advisories-and-disclosures/netskope-security-advisory-nskpsa-2023-002","refsource":"MISC","name":"https://www.netskope.com/company/security-compliance-and-assurance/security-advisories-and-disclosures/netskope-security-advisory-nskpsa-2023-002"}]},"generator":{"engine":"Vulnogram 0.1.0-dev"},"source":{"advisory":"NSKPSA-2023-002","defect":["NSKPSA-2023-002"],"discovery":"EXTERNAL"},"work_around":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Netskope recommends using hardening guidelines listed here -&nbsp;<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>&nbsp;<br>"}],"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"}],"exploit":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Netskope is not aware of any public disclosure and exploitation of this vulnerability at the time of publication.&nbsp;</p>"}],"value":"Netskope is not aware of any public disclosure and exploitation of this vulnerability at the time of publication. \n\n"}],"solution":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","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>"}],"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"}],"credits":[{"lang":"en","value":"Netskope credits Dawson Medin from Mandiant for reporting this flaw."}],"impact":{"cvss":[{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}]}},"nvd":{"publishedDate":"2023-06-15 07:15:00","lastModifiedDate":"2023-06-30 00:08:00","problem_types":["CWE-367"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH"},"exploitabilityScore":1,"impactScore":5.9}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:netskope:netskope:*:*:*:*:*:*:*:*","versionEndExcluding":"100","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]}]}},"legacy_mitre":{"record":null,"notes":[]}}}