CVE-2009-3421

login.php in Zenas PaoBacheca Guestbook 2.1, when register_globals is enabled, allows remote attackers to bypass authentication and gain administrative access…

published September 25, 2009

CVSS
—
EPSS
5%
Percentile
92.2
In the wild
Unconfirmed
What it is

⚠️ A single misguided parameter can unlock the admin door! In Zenas PaoBacheca Guestbook 2.1, an attacker can simply set the login_ok parameter to 1 and gain full access. 🔥 Think of it like a restaurant where anyone can sneak in just by claiming they're part of the kitchen staff — no questions asked! This flaw allows unauthorized users to bypass authentication as easily as slipping through an unlocked door. This could lead to a full takeover where attackers can manipulate guestbook entries, change settings, or even wreak havoc by deleting crucial data. The potential fallout is absolutely devastating, turning your friendly guestbook into a playground for mischief!

Put simply

Think of it like a restaurant where anyone can sneak in just by claiming they're part of the kitchen staff — no questions asked! This flaw allows unauthorized users to bypass authentication as easily as slipping through an unlocked door. In Zenas PaoBacheca Guestbook 2.1, when register_globals is enabled, attackers can gain administrative access by tampering with the login_ok parameter — a serious oversight that neglects proper session management.

What to do

This could lead to a full takeover where attackers can manipulate guestbook entries, change settings, or even wreak havoc by deleting crucial data. The potential fallout is absolutely devastating, turning your friendly guestbook into a playground for mischief! To secure your setup, disable register_globals if possible and consider patching to a newer version of the guestbook that addresses this vulnerability. Regularly audit your configuration settings to avoid similar issues in the future. You've got this! With a few tweaks, you can protect your guestbook and keep those pesky attackers at bay! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.04989 · 92.2th percentile
Published
2009-09-25T22:00Z
EPSS history
Timeline
  • 25 SEP 22:00Z
    login.php in Zenas PaoBacheca Guestbook 2.1, when register_globals is enabled, allows remote attackers to bypass authentication and gain administrative access…
    cvelistv5