PHP 5.3.7 crypt() MD5 Incorrect Return Value

high Nessus Plugin ID 55969
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The remote web server uses a version of PHP that is affected by a security bypass vulnerability.


According to its banner, PHP 5.3.7 is installed on the remote host. This version contains a bug in the crypt() function when generating salted MD5 hashes. The function only returns the salt rather than the salt and hash. Any authentication mechanism that uses crypt() could authorize all authentication attempts due to this bug.


Upgrade to PHP 5.3.8 or later.

See Also

Plugin Details

Severity: High

ID: 55969

File Name: php_5_3_8.nasl

Version: 1.10

Type: remote

Family: CGI abuses

Published: 8/24/2011

Updated: 1/19/2021

Dependencies: php_version.nasl

Risk Information


Risk Factor: Medium

Score: 5.2


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:php:php

Required KB Items: www/PHP

Exploit Ease: No exploit is required

Patch Publication Date: 8/23/2011

Vulnerability Publication Date: 8/17/2011

Reference Information

CVE: CVE-2011-3189

BID: 49376

Secunia: 45678