Exploit the possiblities

WordPress Pretty Photo Cross Site Scripting

WordPress Pretty Photo Cross Site Scripting
Posted Nov 20, 2013
Authored by Rafay Baloch

WordPress Pretty Photo plugin suffers from a cross site scripting vulnerability.

tags | exploit, xss
MD5 | efb1df2016a22b2f0ce769614c2b718e

WordPress Pretty Photo Cross Site Scripting

Change Mirror Download
Wp-Pretty Photo DOM Based XSS Vulnerability

Details
=======
Product: PrettyPhoto Plugin
Security-Risk: Moderate
Remote-Exploit: yes
Company: RHAINFOSEC
Website: http://services.rafayhackingarticles.net
Vendor-URL: https://github.com/scaron/prettyphoto
Vendor-Status: informed
Advisory-Status: published

Credits
=======
Discovered by: Rafay Baloch
http://services.rafayhackingarticles.net

Description
========
The worpdress pretty photo plugin appears to be vulnerable to a DOM based
xss, unlike other XSS, dom based xss occurs on the client side, thus
leaving all the server side defenses worthlesss. The issue occurs inside
the client side javascripts
where the source (User supplied input) is passed through a vulnerable sink
(Anything that creates/writes) without sanitsing/escaping the user supplied
input

More Details
=========


Line 623: hashIndex = getHashtag();

Inside the line 623, we see a variable hashIndex which calls th e
getHashtag() function, which is responsible for returning the user
supplied values after the hash.


Let's take a look at teh getHashtag() function:

getHashtag()
{
url=location.href;hashtag=(url.indexOf('#!')!=-1)?decodeURI
(url.substring(url.indexOf('#!')+2,url.length)):false;return
hashtag;};

The function getHashtag() is used for returning the user supplied input,
the function also checks if the user input contains the hash bang and then
returns the value.

setTimeout(function()
{
$("a[rel^='" + hashRel + "']:eq(" + hashIndex + ")").trigger('click'); },
50);

Finally we have the above line which is responsible for the cause of the
dom based xss, the $("a[rel^='" + hashRel + "']:eq(" + hashIndex + ")
writes the user supplied input to the dom without sanitising the input.

POC
===

http://target.com/#!%22%3E%3Cimg%20src=1%20onerror=prompt%280%29;%3E//

The issue was fixed by sanitising the "hashrel" input before returning it
to the user.

hashIndex = parseInt(hashIndex);
hashRel = hashRel.replace(/([ #;&,.+*~\':"!^$[\]()=>|\/])/g,'\\$1');


References
==========

http://www.rafayhackingarticles.net/2013/05/kali-linux-dom-based-xss-writeup.html


Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

Want To Donate?


Bitcoin: 18PFeCVLwpmaBuQqd5xAYZ8bZdvbyEWMmU

File Archive:

January 2018

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jan 1st
    2 Files
  • 2
    Jan 2nd
    13 Files
  • 3
    Jan 3rd
    16 Files
  • 4
    Jan 4th
    39 Files
  • 5
    Jan 5th
    26 Files
  • 6
    Jan 6th
    40 Files
  • 7
    Jan 7th
    2 Files
  • 8
    Jan 8th
    16 Files
  • 9
    Jan 9th
    25 Files
  • 10
    Jan 10th
    28 Files
  • 11
    Jan 11th
    44 Files
  • 12
    Jan 12th
    32 Files
  • 13
    Jan 13th
    2 Files
  • 14
    Jan 14th
    4 Files
  • 15
    Jan 15th
    31 Files
  • 16
    Jan 16th
    15 Files
  • 17
    Jan 17th
    16 Files
  • 18
    Jan 18th
    24 Files
  • 19
    Jan 19th
    0 Files
  • 20
    Jan 20th
    0 Files
  • 21
    Jan 21st
    0 Files
  • 22
    Jan 22nd
    0 Files
  • 23
    Jan 23rd
    0 Files
  • 24
    Jan 24th
    0 Files
  • 25
    Jan 25th
    0 Files
  • 26
    Jan 26th
    0 Files
  • 27
    Jan 27th
    0 Files
  • 28
    Jan 28th
    0 Files
  • 29
    Jan 29th
    0 Files
  • 30
    Jan 30th
    0 Files
  • 31
    Jan 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2018 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close