1 / 4

Casper / Codiva

Casper / Codiva. Compiler-assisted securing of programs at runtime Code diversity Protection from most stack-smashing attacks. Compiler-assisted securing of programs at runtime Code diversity Protection from most stack-smashing attacks Available as patches: Compiler: gcc-2.95

javan
Download Presentation

Casper / Codiva

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Casper / Codiva • Compiler-assisted securing of programs at runtime • Code diversity • Protection from most stack-smashing attacks • Compiler-assisted securing of programs at runtime • Code diversity • Protection from most stack-smashing attacks • Available as patches: • Compiler: gcc-2.95 • Debugger: gdb-5.2.1 PC ret. addr := 32-bit XOR ret. addr 0xBadAdda0 ... ... ... (“/bin/sh”) exec void function(int x, float y, char* s) { int a; int b; char buffer[SIZE]; int c; ... ; strcpy(buffer, s); ... }

  2. Casper – future work • Activation records • automatically managed • randomised layout • Heap smashing techniques • break type-system • corrupt malloc data • Diversified research • Languages, Compilers: C++, Sun CC, Visual C++ • Other architectures: Solaris, Alpha (DLX ;-)

  3. Worklets • Java-based mobile agent system • Code transportation and dynamic integration mechanism

  4. Worklets – past projects • Dan Phung, Alex Bogomolov • Micro-control of junctions • repeat, start-condition, etc. • Registration and discovery mechanism • Security • encryption, authentication and authorisation • Optimised Worklet transportation • Workgroup Cache • Partial compression

More Related