{"vulnerability": "CVE-2021-26432", "sightings": [{"uuid": "7c3b32ad-642c-4ffd-8ac9-ca7fe86bff8f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-26432", "type": "seen", "source": "https://t.me/arpsyndicate/671", "content": "#ExploitObserverAlert\n\nCVE-2021-26432\n\nDESCRIPTION: Exploit Observer has 2 entries related to CVE-2021-26432. Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability\n\nFIRST-EPSS: 0.028650000\nNVD-IS: 5.9\nNVD-ES: 3.9", "creation_timestamp": "2023-11-29T05:30:24.000000Z"}, {"uuid": "97246b22-e3dc-466c-afa0-24cd3dd82b59", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-26432", "type": "seen", "source": "https://t.me/true_secator/1993", "content": "\u200b\u200b\u00ab\u0418\u043c\u043f\u0435\u0440\u0438\u044f \u043d\u0430\u043d\u043e\u0441\u0438\u0442 \u043e\u0442\u0432\u0435\u0442\u043d\u044b\u0439 \u0443\u0434\u0430\u0440\u00bb - \u0442\u0430\u043a \u043c\u044b \u043e\u0431\u043e\u0437\u043d\u0430\u0447\u0438\u043c, \u043f\u043e\u0436\u0430\u043b\u0443\u0439, \u044d\u043f\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043f\u0430\u0442\u0447 \u043e\u0442 Microsoft, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442 \u0432 \u043e\u0431\u0449\u0435\u0439 \u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u0438 44 CVE, \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 7 - \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435, 3 - zeroday, 37 - \u0432\u0430\u0436\u043d\u044b\u0435, 13 - \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0434\u0430, 8 - \u043a\u0430\u0441\u0430\u044e\u0442\u0441\u044f \u0440\u0430\u0441\u043a\u0440\u044b\u0442\u0438\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438, \u0430 \u0433\u043b\u0430\u0432\u043d\u043e\u0435 - \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u0442 \u043a\u0430\u043a \u0431\u044b \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f PrintNightmare \u0438 PetitPotam.\n\n\u0412 \u043e\u0431\u0449\u0435\u043c, \u0431\u0430\u0433\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0432 NET Core, Visual Studio, ASP.NET Core, Azure, \u0426\u0435\u043d\u0442\u0440 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f Windows,  \u0434\u0438\u0441\u043f\u0435\u0442\u0447\u0435\u0440 \u043e\u0447\u0435\u0440\u0435\u0434\u0438 \u043f\u0435\u0447\u0430\u0442\u0438 Windows, Windows Media, \u0417\u0430\u0449\u0438\u0442\u043d\u0438\u043a Windows, \u043a\u043b\u0438\u0435\u043d\u0442 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0440\u0430\u0431\u043e\u0447\u0435\u0433\u043e \u0441\u0442\u043e\u043b\u0430, Microsoft Dynamics, Microsoft Edge, Microsoft Office, Microsoft Office SharePoint \u0438 \u0434\u0440.\n\n\u041a \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u043c \u043e\u0448\u0438\u0431\u043a\u0430\u043c \u043d\u0443\u043b\u0435\u0432\u043e\u0433\u043e \u0434\u043d\u044f \u043e\u0442\u043d\u043e\u0441\u044f\u0442\u0441\u044f:\n \u2022 CVE-2021-36948: \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0430\u044f \u0441 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u0435\u043c  \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 Windows Update Medic;\n \u2022 CVE-2021-36942: \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0434\u043c\u0435\u043d\u044b Windows LSA;\n \u2022 CVE-2021-36936: \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438  \u0434\u0438\u0441\u043f\u0435\u0442\u0447\u0435\u0440\u0430 \u043e\u0447\u0435\u0440\u0435\u0434\u0438 \u043f\u0435\u0447\u0430\u0442\u0438 Windows.\n\n\u041f\u0440\u0438 \u044d\u0442\u043e\u043c \u0438\u0437 \u043d\u0438\u0445, \u0441\u043e\u0433\u043b\u0430\u0441\u043d\u043e \u0434\u0430\u043d\u043d\u044b\u043c Microsoft, \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u043b\u0430\u0441\u044c \u0432 \u0440\u0435\u0430\u043b\u0435 \u043b\u0438\u0448\u044c CVE-2021-36948, \u043e\u0434\u043d\u0430\u043a\u043e \u043a\u0435\u043c \u0438 \u043a\u0430\u043a \u0438\u0441\u0442\u043e\u0440\u0438\u044f \u0443\u043c\u0430\u043b\u0447\u0438\u0432\u0430\u0435\u0442. \u041c\u044b \u043f\u043e\u043b\u0430\u0433\u0430\u0435\u043c, \u0447\u0442\u043e \u0437\u0430 \u043d\u0435\u0439 \u043c\u043e\u0436\u0435\u0442 \u0441\u043a\u0440\u044b\u0432\u0430\u0442\u044c\u0441\u044f \u043d\u043e\u044f\u0431\u0440\u044c\u0441\u043a\u0430\u044f 2020-\u0433\u043e\u0434\u0430 CVE-2020-17070, \u0430 \u0440\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0430 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0441\u0432\u043e\u0435\u043e\u0431\u0440\u0430\u0437\u043d\u044b\u043c \u0444\u043e\u043a\u0443\u0441\u043e\u043c \u0434\u043b\u044f \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u043e\u0432.\n\n\u041d\u0430 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435 \u0436\u0435 \u0441\u0440\u0435\u0434\u0438 \u043f\u0440\u043e\u0447\u0438\u0445 \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u0443\u0434\u0435\u043b\u0438\u0442\u044c \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 CVE-2021-26424, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043d\u0435\u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u043a\u0430\u0441\u0430\u0435\u0442\u0441\u044f Windows TCP/IP Remote Code Execution \u0432 \u0432\u0435\u0441\u044c\u043c\u0430 \u043f\u043e\u043f\u0443\u043b\u044f\u0440\u043d\u044b\u0445 Windows 7\u201310 \u0438 Windows Server 2008\u20132019. \u041e\u0448\u0438\u0431\u043a\u0430, \u0441 \u0431\u043e\u043b\u044c\u0448\u043e\u0439 \u0434\u043e\u043b\u0435\u0439 \u0432\u0435\u0440\u043e\u044f\u0442\u043d\u043e\u0441\u0442\u0438, \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0430 \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u0430\u043c\u0438 \u0432 \u0432\u0438\u0434\u0443 \u0435\u0435 \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u0442\u0440\u0438\u0432\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u043a\u0430\u043a \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440 CVE-2020-16898, \u044d\u043a\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u0432\u0448\u0430\u044f\u0441\u044f \u0432\u0434\u043e\u043b\u044c \u0438 \u043f\u043e\u043f\u0435\u0440\u0435\u043a \u0432 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u0433\u043e\u0434\u0443.\n\n\u0410\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u043e\u0435 \u0437\u0430\u043c\u0435\u0447\u0430\u043d\u0438\u0435 \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0441\u044f \u0438 \u043a CVE-2021-26432, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u043f\u0430\u0442\u0447 \u0434\u043b\u044f \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 NFS ONCRPC XDR \u0441\u043b\u0443\u0436\u0431 Windows, \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f  \u043e\u0448\u0438\u0431\u043a\u0438 \u043d\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442 \u043d\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438, \u043d\u0438 \u0432\u0437\u0430\u0438\u043c\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u0441 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c.\n\n\u041c\u043e\u0436\u043d\u043e \u043e\u0442\u043a\u0430\u0437\u044b\u0432\u0430\u0442\u044c\u0441\u044f \u043e\u0442 \u0444\u0438\u043b\u044c\u0442\u0440\u043e\u0432 NETSH \u0432 \u0432\u043e\u043f\u0440\u043e\u0441\u0435 \u043f\u0440\u043e\u0442\u0438\u0432\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u0430\u0442\u0430\u043a\u0430\u043c PetitPotam, \u043f\u0430\u0442\u0447 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0443\u0435\u0442 \u0432\u0435\u043a\u0442\u043e\u0440 \u044d\u0442\u043e\u0439 \u0430\u0442\u0430\u043a\u0438, \u0431\u043b\u043e\u043a\u0438\u0440\u0443\u044f \u0432\u044b\u0437\u043e\u0432\u044b \u0443\u044f\u0437\u0432\u0438\u043c\u044b\u0445 API OpenEncryptedFileRawA \u0438 OpenEncryptedFileRawW \u0447\u0435\u0440\u0435\u0437 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 LSARPC. \u041d\u043e \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e \u0441 \u044d\u0442\u0438\u043c \u0438 \u0431\u043b\u043e\u043a\u0438\u0440\u0443\u0435\u0442 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0435 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u0435 \u0440\u0435\u0437\u0435\u0440\u0432\u043d\u043e\u0433\u043e \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u0444\u0443\u043d\u043a\u0446\u0438\u044e EFS API OpenEncryptedFileRaw (A / W) \u0432 Windows 7 \u0438 Windows Server 2008, \u0434\u043b\u044f \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043f\u043e\u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0443 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0435 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u0435 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438. \u0412\u0441\u0435 \u0434\u043b\u044f \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432, \u043a\u0430\u043a \u0433\u043e\u0432\u043e\u0440\u0438\u0442\u0441\u044f.\n\n\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c PrintNightmare \u0442\u0430\u043a\u0436\u0435 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0432\u0432\u043e\u0434\u0430 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0438\u044f \u043e\u0442 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u043f\u0440\u0430\u0432 \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430 \u0434\u043b\u044f \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 \u043f\u0440\u0438\u043d\u0442\u0435\u0440\u0430 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0423\u043a\u0430\u0437\u0430\u0442\u044c \u0438 \u043d\u0430\u043f\u0435\u0447\u0430\u0442\u0430\u0442\u044c.\n\n\u0412\u0441\u0435 \u0431\u044b \u043d\u0438\u0447\u0435\u0433\u043e, \u043d\u043e!\n\n\u041a \u0441\u043e\u0436\u0430\u043b\u0435\u043d\u0438\u044e, \u0432\u0441\u043a\u043e\u0440\u0435 \u043f\u043e\u0441\u043b\u0435 \u0442\u043e\u0433\u043e, \u043a\u0430\u043a Microsoft \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u043b\u0430 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438, \u043d\u0435\u0431\u0435\u0437\u044b\u0437\u0432\u0435\u0441\u0442\u043d\u044b\u0439 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c \nBenjamin Delpy \u0437\u0430\u0431\u043e\u043c\u0431\u0438\u043b, \u0447\u0442\u043e \u0435\u0433\u043e \u043f\u0430\u043a\u0435\u0442\u043d\u044b\u0439 \u0434\u0440\u0430\u0439\u0432\u0435\u0440 \u043f\u0435\u0447\u0430\u0442\u0438 PoC, \u043f\u043e-\u043f\u0440\u0435\u0436\u043d\u0435\u043c\u0443, \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c Still SYSTEM from standard user\u2026\n\n\u041f\u043e\u0445\u043e\u0436\u0435, \u043e\u0442\u0432\u0435\u0442\u043d\u044b\u0439 \u00ab\u0443\u0434\u0430\u0440 \u0438\u043c\u043f\u0435\u0440\u0438\u0438\u00bb \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u043e\u0442\u0440\u0435\u043a\u043e\u0448\u0435\u0442\u0438\u043b, \u0432 \u043e\u0431\u0440\u0430\u0442\u043d\u0443\u044e \u0441\u0442\u043e\u0440\u043e\u043d\u0443. \u042d\u0445, \u0430 \u043c\u044b \u0442\u0430\u043a \u043d\u0430\u0434\u0435\u044f\u043b\u0438\u0441\u044c.", "creation_timestamp": "2021-08-11T18:46:50.000000Z"}, {"uuid": "8dee6010-4504-4632-bf94-94a7a6bb435c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-26432", "type": "seen", "source": "https://t.me/hacking_Attack/53141", "content": "2008 through 2022. However, this vulnerability only affects NFSV2 and NFSV3, and Microsoft has included instructions for disabling these versions of the NFS in the bulletin.\n\nAt the same time, Microsoft characterized the ease of exploitation of these vulnerabilities as \u201cExploitation More Likely,\u201d as was the case with a similar vulnerability, CVE-2021-26432, an actively exploited zero day in the TCP/IP protocol stack in Windows server that was patched\u00a0in August 2021.\n\n\u201cGiven the similarities between these vulnerabilities and those of August of 2021, we could all be in store for a rough May,\u201d Liska noted.\nSee Also: Attackers Use Event Logs to Hide Fileless Malware Another Important Flaw FixedOf the other flaws, another \u201cimportant\u201d one to note is CVE-2022-22019, a companion vulnerability to three previously disclosed and patched flaws found in Microsoft\u2019s Remote Procedure Call (RPC) runtime library.\n\nThe vulnerability, discovered by Akamai researcher Ben Barnea, takes advantage of three RPC runtime library flaws that Microsoft had patched in April\u2013CVE-2022-26809, CVE-2022-24492\u00a0and CVE-2022-24528, he revealed in a blog post Tuesday. The flaws affected Windows 7, 8, 10 and 11, and Windows Servers 2008, 2012, 2019 and 2022, and could allow a remote, unauthenticated attacker to execute code on the vulnerable machine with the privileges of the RPC service.\n\nAkamai researchers discovered that the previous patch only partially addressed the problem, allowing the new vulnerability to create the same integer overflow that was supposed to be fixed, he explained.\n\n\u201cDuring our research, we found that right before allocating memory for the new coalesced buffer, the code adds another 24 bytes to the allocation size,\u201d Barnea wrote in the post. \u201cThese 24 bytes are the size of a struct called \u2018rpcconn_request_hdr_t,\u2019 which serves as the buffer header.\u201d See Also: OSINT Tool: MOSINT\nThe previous patch performs the check for integer overflow before adding the header size, so it does not take into account this header\u2013which can lead to the same integer overflow that the patch was attempting to mitigate, he explained.\n\n\u201cThe new patch adds another call to validate that the addition of 24 bytes does not overflow,\u201d mitigating the problem, Barnea wrote. Are u a security researcher? Or a company that writes articles or write ups about Cyber Security, Offensive Security (related to information security in general) that match with our specific audience and is worth sharing?\n\nIf you want to express your idea in an article contact us here for a quote: info@blackhatethicalhacking.com\nSee Also: Write up: Find hidden and encrypted secrets from any website Source: threatpost.com Source Linkhttps://www.blackhatethicalhacking.com/wp-content/uploads/2022/03/Merch-1024x1024.png Recent News* https://www.blackhatethicalhacking.com/wp-content/uploads/2022/05/maxresdefault-90x90.jpg UK government blocked four times as many cyber-scams in 20211 day ago\n* https://www.blackhatethicalhacking.com/wp-content/uploads/2022/05/microsoft-azure-cloud-90x90.jpg Microsoft releases fixes for Azure flaw allowing RCE attacks2 days ago\n* https://www.blackhatethicalhacking.com/wp-content/uploads/2022/05/f5-big-ip-hacking-90x90.jpg Exploits created for critical F5 BIG-IP flaw, install patch immediately3 days ago\n* https://www.blackhatethicalhacking.com/wp-content/uploads/2022/05/Fileless-Malware-660x400-1-90x90.jpg Attackers Use Event Logs to Hide Fileless Malware6 days ago\n* https://www.blackhatethicalhacking.com/wp-content/uploads/2022/05/poison-1481596_1920-90x90.jpg Zero-day bug in uClibc library could leave IoT devices vulnerable to DNS poisoning attacks1 week ago\n* https://www.blackhatethicalhacking.com/wp-content/uploads/2022/05/1ed10a11bb45c273cebc7b8cb492979249bcdcec-90x90.png Security bug in VMWare Workspace ONE could allow access to internal, cloud networks1 week ago\n* https://www.blackhatethicalhacking.com/wp-content/uplo[...]\n\n___________________________ \n@hacking_Attack\n@Hacking_Video", "creation_timestamp": "2026-09-01T20:01:41.293619Z"}, {"uuid": "4f709f82-d933-4e36-86fa-ac636c4a9232", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-26432", "type": "seen", "source": "https://t.me/hacking_Attack/19794", "content": "Black Hat Ethical Hacking\nActively Exploited Windows Zero-Day Gets a Patch\n\nhttps://www.blackhatethicalhacking.com/wp-content/uploads/2017/11/black-hat-locks-and-electronics.jpg Actively Exploited Windows Zero-Day Gets a PatchPost Views: 60 \nReading Time: 2 Minutes\nMicrosoft has patched 51 security vulnerabilities in its scheduled August Patch Tuesday update, including seven critical bugs, two issues that were publicly disclosed but unpatched until now, and one that\u2019s listed as a zero-day that has been exploited in the wild.\nMicrosoft\u2019s August 2021 Patch Tuesday addressed a smaller set of bugs than usual, including more Print Spooler problems, a zero-day and seven critical vulnerabilities.\nOf note, there are 17 elevation-of-privilege (EoP) vulnerabilities, 13 remote code-execution (RCE) issues, eight information-disclosure flaws and two denial-of-service (DoS) bugs.\n\nThe update also includes patches for three more Print Spooler bugs, familiar from the PrintNightmare saga.\n\n\u201cFortunately, it was a lighter month than usual,\u201d said Eric Feldman, senior product marketing manager at Automox, in a Patch Tuesday analysis\u00a0from the vendor. \u201cThis represents a 56 percent reduction in overall vulnerabilities from July, and 33 percent fewer vulnerabilities on average for each month so far this year. We have also seen a similar reduction in critical vulnerabilities this month, with 30 percent less compared to the monthly average.\u201d Windows Critical Security VulnerabilitiesThe seven critical bugs addressed in August\u00a0are as follows:\n\n* CVE-2021-26424 \u2013 Windows TCP/IP RCE Vulnerability\n* CVE-2021-26432 \u2013 Windows Services for NFS ONCRPC XDR Driver RCE Vulnerability\n* CVE-2021-34480 \u2013 Scripting Engine Memory Corruption Vulnerability\n* CVE-2021-34530 \u2013 Windows Graphics Component RCE Vulnerability\n* CVE-2021-34534 \u2013 Windows MSHTML Platform RCE Vulnerability\n* CVE-2021-34535 \u2013 Remote Desktop Client RCE Vulnerability\n* CVE-2021-36936 \u2013 Windows Print Spooler RCE Vulnerability\nSee Also: Auth Bypass Bug Exploited, Affecting Millions of Routers The bug tracked as CVE-2021-26424\u00a0exists in the TCP/IP protocol stack identified in Windows 7 and newer Microsoft operating systems, including servers.\n\n\u201cDespite its CVSS rating of 9.9, this may prove to be a trivial bug, but it\u2019s still fascinating,\u201d said Dustin Childs of Trend Micro\u2019s Zero Day Initiative (ZDI) in his Tuesday analysis. \u201cAn attacker on a guest Hyper-V OS could execute code on the host Hyper-V server by sending a specially crafted IPv6 ping. This keeps it out of the wormable category. Still, a successful attack would allow the guest OS to completely take over the Hyper-V host. While not wormable, it\u2019s still cool to see new bugs in new scenarios being found in protocols that have been around for years.\u201d\n\nThe next bug, CVE-2021-26432\u00a0in Windows Services, is more likely to be exploited given its low complexity status, according to Microsoft\u2019s advisory; it doesn\u2019t require privileges or user interaction to exploit, but Microsoft offered no further details.\n\n\u201cThis may fall into the \u2018wormable\u2019 category, at least between servers with NFS installed, especially since the open network computing remote procedure call (ONCRPC) consists of an External Data Representation (XDR) runtime built on the Winsock Kernel (WSK) interface,\u201d Childs said. \u201cThat certainly sounds like elevated code on a listening network service. Don\u2019t ignore this patch.\u201d\n\nAleks Haugom, product marketing manager at Automox, added, \u201cExploitation results in total loss of confidentiality across all devices managed by the same security authority. Furthermore, attackers can utilize it for denial-of-service attacks or to maliciously modify files. So far, no further details have been divulged by Mic[...]\n\n___________________________ \n@hacking_Attack\n@Hacking_Video", "creation_timestamp": "2026-09-01T20:02:29.038643Z"}]}