CVE-2009-4143

PHP before 5.2.12 does not properly handle session data, which has unspecified impact and attack vectors related to (1) interrupt corruption of the SESSION…

published December 21, 2009

CVSS
—
EPSS
3%
Percentile
87.1
In the wild
Unconfirmed
What it is

⚠️ PHP versions before 5.2.12 may mishandle session data, turning your superglobal SESSION array into a game of telephone! 📞 Think of it like a game of telephone, where messages get twisted and turned as they pass along the line. If someone interrupts the flow, the final message can end up being something completely different from what was originally intended! This could lead to unpredictable behavior in your application, potentially exposing user data or allowing unauthorized actions. While the severity is currently unknown, even minor disruptions can create vulnerabilities for attackers. We want to make sure you're not caught off guard!

Put simply

Think of it like a game of telephone, where messages get twisted and turned as they pass along the line. If someone interrupts the flow, the final message can end up being something completely different from what was originally intended! The vulnerability in PHP before version 5.2.12 arises from improper handling of session data, specifically when the SESSION superglobal array is interrupted or corrupted, affecting how session.save_path directives are processed.

What to do

This could lead to unpredictable behavior in your application, potentially exposing user data or allowing unauthorized actions. While the severity is currently unknown, even minor disruptions can create vulnerabilities for attackers. We want to make sure you're not caught off guard! Upgrade your PHP to at least version 5.2.12 to resolve this issue. Ensure that session management is properly configured to avoid any malicious access and consider implementing secure coding practices around session handling. Don't leave any room for surprises! You've got this! Upgrade and secure your sessions to keep your application running smoothly and safely! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02946 · 87.1th percentile
Published
2009-12-21T16:00Z
EPSS history
Timeline
  • 21 DEC 16:00Z
    PHP before 5.2.12 does not properly handle session data, which has unspecified impact and attack vectors related to (1) interrupt corruption of the SESSION…
    cvelistv5