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Move the canary to eliminate the frame pointer problem. Broad range of integrity check for return address, frame pointer, and local variables. ...
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StackGuard places a 'canary' word next to (prior) the return address on the stack. ... If the integrity of canary word is compromised, the program will terminate. ...
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Buffer overflow attacks. Integer overflow attacks. Format string vulnerabilities ... Exploiting buffer overflows. Suppose web server calls func() with given URL. ...
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Title: Slide 1 Author: HOMENET Last modified by: Berk D. Demir Created Date: 4/17/2002 6:34:58 AM Document presentation format: On-screen Show Company
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Control Hijacking Attacks Buffer overflows and format string bugs
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Canary = 0, newline, linefeed, EOF. String functions will not copy beyond terminator. ... Random canary. Triggers UnHandledException in case of Canary mismatch ...
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A Comparison of Buffer Overflow Prevention Implementations and Their Weaknesses Richard Johnson | Peter Silberman Agenda Compiler-Enforced Protection StackGuard ...
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A Practical Dynamic Buffer Overflow Detector (CRED) Olatunji Ruwase Monica S. Lam Transmeta Corp. Stanford University Network and Distributed Security Symposium.
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What is Soekris and where do I get it? Different models and ... Blowfish. Cast. Hardware. Ipsec crypto dequeue. 3DES at 130 Mbps. VIA C3 AES-128 at 780 Mbyte/s ...
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GCC Hacks. Alexey Smirnov. GRC'06. http://gcchacks.info. Introduction ... Hacks. Syntactic sugar. Operating systems. Security. Syntactic Sugar ...
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Any procedure in program's environment to prevent successful ... Compile. Execute. Vulnerable Prog w/ Sec. Mechanism. Exploit. Attack. Prevented? yes. no ...
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Cannot generate, test, or deref any other out-of ... Focus of this work: Compatibility. Simplicity. correctness. thorough compatibility tests (1.2 M loc) ...
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Title: PowerPoint Presentation Author: Nicolas T. Courtois Last modified by: Nicolas Courtois Created Date: 2/10/2002 12:14:05 PM Document presentation format
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Methodical Protection against Code Injection Attacks
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Title: Security and Privacy Technologies Subject: Exploiting memory Author: Vitaly Shmatikov Last modified by: UTCS-SHMAT Created Date: 9/7/1997 8:51:32 PM
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Protect from code-injection attacks. create unique execution environment (instruction set) ... equally applicable for interpreted environments and native machine code ...
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equally applicable for interpreted environments and native machine code ... H. Ackley, Stephanie Forrest, Trek S. Palmer, Darko Stefanovic and Dino Dai Zovi. ...
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Program Security/Malware Information Assurance Fall 2005 Reading Material In Computer Security: Art and Science Implementation Section of Chapter 19 Vulnerability ...
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1968 (conference on software crisis after IC invention, with more ... ????(Y2K,malicious buffer overflow) ???????????. ????????(Web Internet Platform Security) ...
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Title: CS 380S - Great Papers in Computer Security Subject: Buffer overflows Author: Vitaly Shmatikov Last modified by: Dynamism Created Date: 9/7/1997 8:51:32 PM
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... smashing attacks,' http://www.trl.ibm.com/projects/security/ssp/ , June 2000 ... However, a bug exists in vulnerable versions of IE where files can be passed to ...
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Do a reverse lookup to find a hostname, and then lookup for that hostname to see if they match ... Put limits on the number of connections, set reasonable ...
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Inverted CERN School of Computing, February 24th, 2005 ... use directories not writable to everyone (i.e. /tmp/my_dir with 0700 file permissions, or ~/tmp) ...
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OS's, Web Applications, Databases, ClientServer applications ... Cram data into program see if program crashes .. vulnerability. Known as 'fuzzing' input ...
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String functions will not copy beyond terminator. ... if either operand is an unsigned long, both are cast to an unsigned long ...
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