CVEvulnerability

CVE-2006-0805

7.5 HIGH Published 2006-02-21 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2006-02-21
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P

Description

The CAPTCHA functionality in php-Nuke 6.0 through 7.9 uses fixed challenge/response pairs that only vary once per day based on the User Agent (HTTP_USER_AGENT), which allows remote attackers to bypass CAPTCHA controls by fixing the User Agent, performing a valid challenge/response, then replaying that pair in the random_num and gfx_check parameters.

Affected configurations

• francisco burzi php-nuke 6.0 • francisco burzi php-nuke 6.5 • francisco burzi php-nuke 6.5 beta1 • francisco burzi php-nuke 6.5 final • francisco burzi php-nuke 6.5 rc1 • francisco burzi php-nuke 6.5 rc2 • francisco burzi php-nuke 6.5 rc3 • francisco burzi php-nuke 6.6 • francisco burzi php-nuke 6.7 • francisco burzi php-nuke 6.9 • francisco burzi php-nuke 7.0 • francisco burzi php-nuke 7.0 final • francisco burzi php-nuke 7.1 • francisco burzi php-nuke 7.2 • francisco burzi php-nuke 7.3 • francisco burzi php-nuke 7.4 • francisco burzi php-nuke 7.5 • francisco burzi php-nuke 7.6 • francisco burzi php-nuke 7.7 • francisco burzi php-nuke 7.8 • francisco burzi php-nuke 7.9

References