NDLI: Static-Dynamic Control Flow Integrity

Content Provider	IEEE Xplore Digital Library
Author	Liu, Xiaolong Wei, Qiang Ye, Ziwei
Copyright Year	2014
Abstract	CCFIR (Compact Control Flow Integrity and Randomization) has low performance overhead as an exploit mitigation, but it is hard to mitigate exploits by hijacking virtual function pointer, which are emerging in recent years. Because of the polymorphism of virtual functions, CCFIR can't determine a unique spring board stub. We propose a new practical protection method named SDCFI (Static-Dynamic Control Flow Integrity), whose goal is to protect virtual function pointers from hijacking. Taking advantage of static analysis result of IDA and PIN dynamic instrumentation, SDCFI improves the accuracy of the disassembly and identifies indirect call target addresses at runtime. We observe that there are always double 0x90 bytes for alignment in the gap between two functions, which can be substituted by a two-byte checkmark. Using the checkmark, SDCFI can validate a target more simply and faster than traditional CFI. Based on these approaches, SDCFI can prevent control-flow hijacking attacks including ROP, because the gadgets of stack pivot can't pass the validation. We evaluate our prototype implementation for Internet Explorer8 browser on Windows XP, which faces serious security threats since April 8, 2014. SDCFI protects most indirect call instructions in msthml.dll, and has low runtime overhead of 1.48% on average. Experiments on real-world exploits for IE8 browser also show that SDCFI can effectively mitigate exploits by hijacking virtual function pointer.
Starting Page	189
Ending Page	196
File Size	522671
Page Count	8
File Format	PDF
ISBN	9781479941711
DOI	10.1109/3PGCIC.2014.58
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-11-08
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Runtime Accuracy Instruments Control Flow Integrity Exploit mitigation Browsers Registers Internet Security Hijacking virtual function pointer
Content Type	Text
Resource Type	Article

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