tailieunhanh - Buffer Overflow

Tham khảo bài thuyết trình 'buffer overflow', công nghệ thông tin, an ninh - bảo mật phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Buffer Overflow Module 17 Engineered by Hackers. Presented by Professionals. CEH Certified I Ethical Hacker http CEH MCITP CCNA CCNP VMware sphere LPI Web Design Zero Day Bug Bypasses Windows User Account Control Local buffer overflow vulnerability tricks Microsoft operating systems into granting an attacker system-level user privileges. Multiple versions of Microsoft Windows are vulnerable to a previously undisclosed zero-day buffer-overflow vulnerability that would allow an attacker to gain system-level privileges and take control of the PC. According to security research firm Vupen this issue is caused by a buffer overflow error within the driver when processing certain registry values stored as reg binary which could allow unprivileged users to crash an affected system or execute arbitrary code with kernel system privileges by modifying registry values related to end-user-defined characters EUDC for fonts. According to security researcher Chester Wisniewski at Sophos an attacker can use the EUDC-related key to impersonate the system account which has nearly unlimited access to all components of the Windows system. http CEH 2 Copyright by EC-Cwncl All Rights Reserved. Reproduction is strictly Prohibited. http CEH MCITP CCNA CCNP VMware sphere LPI Web Design u Er I Module J Buffer Overflows BoF Stack-Based Buffer Overflow Heap-Based Buffer Overflow Stack Operations Buffer Overflow Steps Attacking a Real Program Smashing the Stack Examples of Buffer Overflow J How to Mutate a Buffer Overflow Exploit Identifying Buffer Overflows J Testing for Heap Overflow Conditions _ Steps for Testing for Stack Overflow in OllyDbg Debugger BoF Detection Tools Defense Against Buffer Overflows BoF Countermeasures Tools BoF Pen Testing Copyright by EC-CaUKfl All Rights Reserved. Reproduction is strictly Prohibited. http CEH MCITP CCNA CCNP VMware sphere LPI Web .