This could become a massive vulnerability since many sites or blogs out there allow user to post image on their article’s comment. As my small research, I found out that we could launch a HTML Injection, XSS and even CSRF attack to sites that vulnerable to this. Here is the PoC :

<img src=”http://zoiz.web.id/fotoku.jpg” width=”10″ height=”10″ onerror=”window.location.href=’http:/zoiz.web.id’;”>

The method is the same as my Pop Up Method, it triggered javascript inside image error handler hence it bypasses javascript filter. This apply to sites that allow users to post image on their comments.

By : Zoiz [at] http://zoiz.web.id
Nothing is Secure

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11 Responses to “Massive HTML Injection Vulnerability”

  1. CalvinLimuel says:

    It didn’t work. Hooray for WordPress!!!!

  2. stu says:

    I don’t really understand zoiz, do you have any basic sql tutorial ? :d

  3. arie says:

    @stu : sqli tutorial ? why dont u browse around websecurity.ro/blog ? :) or lifedork.com maybe? hahahaha

  4. Zoiz says:

    First time I learned SQL is from w3schools.com :P hehehe

  5. [...] Massive HTML Injection Vulnerability [...]

  6. Junkiest says:

    Cool om zoiz…. xixixixxii.
    i just want to learn from you.
    My Herooo…… ^:)^

  7. Zoiz says:

    @test pop
    Filtered sir! Try in on other CMS, wordpress is not vulnerable to this though ;)

  8. [...] February 16, 2008 — Massive HTML Injection Vulnerability (10) [...]

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