News
Vigil@nce: phpMyAdmin, Cross Site Scripting via nul
September 2008 by Vigil@nce
An attacker can use the nul character in order to bypass the anti
Cross Site Scripting security of phpMyAdmin.
– Gravity: 2/4
– Consequences: client access/rights
– Provenance: document
– Means of attack: 1 attack
– Ability of attacker: technician (2/4)
– Confidence: confirmed by the editor (5/5)
– Diffusion of the vulnerable configuration: high (3/3)
– Creation date: 23/09/2008
IMPACTED PRODUCTS
– Fedora
– Unix - plateform
DESCRIPTION
The Internet Explorer browser ignores nul (’\0’) characters
located inside a HTML document. For example:
hello
is interpreted as:
hello
The js_escape.lib.php library of phpMyAdmin filters the JavaScript
code contained in HTML documents. The PMA_escapeJsString()
function handles the "
" final tag. However, if this tag
contains a nul character, it is not recognized.
An attacker can therefore use the nul character in order to bypass
the anti Cross Site Scripting security.
CHARACTERISTICS
– Identifiers: BID-31327, FEDORA-2008-8286, FEDORA-2008-8335,
VIGILANCE-VUL-8125
– Url: http://vigilance.aql.fr/vulnerability/8125
