Questions about this topic? Sign up to ask in the talk tab.

Unsafe evaluation

From NetSec
Revision as of 01:56, 12 May 2013 by JtRIPper (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Proof of concept

It is never safe to eval() user input, plain and simple. There is always another way to skin the cat; try and consider that!

Mitigation

Design around the need to combine the function "eval" with user input.

Auditing

IGNORECASE=1 find -regextype posix-awk -regex ".*\.(rb|php|pl|py|pm)" -exec grep -HnC2 \\beval\( '{}' \;