Linux Viruses and Such

• Remedies / Lessons / Concluding Sermon:

• The “crunchy centre” approach: hardening executables.

• libsafe, StackGuard, Stack Shield, FormatGuard, PointGuard, RaceGuard, PaX, ExecShield, RSX, Openwall, kNoX, grsecurity. All of these either modify gcc or interject a protective library.

• Problem: Things tend to break.

Notes: