{"uuid": "8b697745-99ac-4d02-81b1-a4124a36b971", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21839", "type": "seen", "source": "https://t.me/cissp/4288", "content": "Blue Team Techniques\n1. Multiple vulnerabilities in EMC VNX NAS 8.1.9-232\nSecurity Advisory\nhttps://www.errno.fr/VNX_advisory\n2. Anatomy and Disruption of Metasploit Shellcode\nhttps://blog.nviso.eu/2021/09/02/anatomy-and-disruption-of-metasploit-shellcode\n\nRed Team Tactics\n1. Linphone SIP Protocol Stack:\nCrashing SIP Clients With a Single Slash\nhttps://claroty.com/2021/08/31/blog-research-crashing-sip-clients-with-a-single-slash\n2. MacOS Security & Privilege Escalation\nhttps://book.hacktricks.xyz/macos/macos-security-and-privilege-escalation\n\nexploit\nPoCs for exploiting CVE-2021-21847, \nCVE-2021-21853, CVE-2021-21845, \nCVE-2021-21846, CVE-2021-21844\nCVE-2021-21839:\nhttps://github.com/AlAIAL90/CVE-2021-21847\nhttps://github.com/AlAIAL90/CVE-2021-21853\nhttps://github.com/AlAIAL90/CVE-2021-21845\nhttps://github.com/AlAIAL90/CVE-2021-21846\nhttps://github.com/AlAIAL90/CVE-2021-21844\nhttps://github.com/AlAIAL90/CVE-2021-21839\n// Multiple exploitable integer overflow vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project", "creation_timestamp": "2026-09-01T17:00:41.328185Z"}