CVE-2004-1019

The deserialization code in PHP before 4.3.10 and PHP 5.x up to 5.0.2 allows remote attackers to cause a denial of service and execute arbitrary code via…

published December 22, 2004

CVSS
—
EPSS
8%
Percentile
94.7
In the wild
Unconfirmed
What it is

⚠️ PHP's old deserialization code is a big deal! Before version 4.3.10 and 5.0.2, it opens a door for attackers to mess with your server — and who likes unexpected visitors? 🔥 Think of it like a restaurant that accepts any random order without checking the ingredients. If a chef gets a surprise delivery of spoiled items, it can ruin the entire meal! Similarly, untrusted data sent to the unserialize function can trigger disastrous results like information leaks or server crashes. An attacker could exploit this vulnerability to cause a denial of service, leading to server downtime and potential data exposure. Imagine your site going dark because of a single malicious input — absolutely devastating!

Put simply

Think of it like a restaurant that accepts any random order without checking the ingredients. If a chef gets a surprise delivery of spoiled items, it can ruin the entire meal! Similarly, untrusted data sent to the unserialize function can trigger disastrous results like information leaks or server crashes. The deserialization flaw in PHP allows untrusted data to be processed by the unserialize function, which can lead to information disclosure and issues like double-free errors, causing instability.

What to do

An attacker could exploit this vulnerability to cause a denial of service, leading to server downtime and potential data exposure. Imagine your site going dark because of a single malicious input — absolutely devastating! Upgrade your PHP to at least version 4.3.10 or 5.0.2 to mitigate this vulnerability. Be sure to validate and sanitize all inputs that might reach the unserialize function. Regularly audit your code for any untrusted input handling! You've got this! Just follow these steps, and you'll keep your server safe from unexpected guests! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.07996 · 94.7th percentile
Published
2004-12-22T05:00Z
EPSS history
Timeline
  • 22 DEC 05:00Z
    The deserialization code in PHP before 4.3.10 and PHP 5.x up to 5.0.2 allows remote attackers to cause a denial of service and execute arbitrary code via…
    cvelistv5