[Pl-seminar] secure execution via program shepherding

Mitchell Wand wand at ccs.neu.edu
Thu, 16 May 2002 14:53:34 -0400

Not sure what the overlap is here, but it sounded
interesting... --Mitch 

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- -----Original Message-----
From: Ronald L. Rivest [mailto:rivest@mit.edu]
Sent: Wednesday, May 15, 2002 11:20 PM
To: cis-seminars@theory.lcs.mit.edu
Subject: Fwd: last ASRG of the semester, secure execution via program

Hi all --

This talk by Saman Amarasinghe is very interesting!
(This is an ASRG talk; not a cis seminar, but it is


>Next week (not today!), Professor Saman Amarasinghe will present...
>Topic:  Secure Execution Via Program Shepherding
>Who:    Vladimir Kiriansky, Derek Bruening, Saman Amarasinghe
>When:   Wednesday, May 22 3-4pm
>Where:  NE43-516
>   We introduce {\em program shepherding}, a method for monitoring control
>   flow transfers during program execution to enforce security policies.
>   Program shepherding provides three techniques as building blocks for
>   security policies.  First, shepherding can restrict execution privileges
>   on the basis of code origins.  This distinction can ensure that
>   malicious code masquerading as data is never executed, thwarting a large
>   class of security attacks.  Second, shepherding can restrict control
>   transfers based on instruction class, source, and target.  For example,
>   shepherding can forbid execution of shared library code except through
>   declared entry points, and can ensure that a return instruction only
>   targets the instruction after a call.  Finally, shepherding guarantees
>   that sandboxing checks placed around any type of program operation will
>   never be bypassed.  We have implemented these capabilities efficiently
>   in a runtime system with minimal or no performance penalties.  This
>   system operates on unmodified native binaries, requires no special
>   hardware or operating system support, and runs on existing IA-32
>   machines under both Linux and Windows.
>This paper will be presented at the USENIX Security Symposium in August.
>See http://pdos.lcs.mit.edu/asrg/ for more information.
>Kevin E. Fu (fubob@mit.edu)

Ronald L. Rivest
Room 324, 200 Technology Square, Cambridge MA 02139
Tel 617-253-5880, Fax 617-258-9738, Email <rivest@mit.edu>

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