CVE-2016-4345

Integer overflow in the php_filter_encode_url function in ext/filter/sanitizing_filters.c in PHP before 7.0.4 allows remote attackers to cause a denial of…

published May 22, 2016

CVSS
—
EPSS
5%
Percentile
92.4
In the wild
Unconfirmed
What it is

⚠️ An integer overflow in the php_filter_encode_url function can lead to some seriously unexpected results! Imagine handing a waiter a ridiculously long order that causes the kitchen to overflow with chaos! 🍽️ Think of this vulnerability like a restaurant where someone sends in an incredibly excessive order. The kitchen can't handle such an influx, leading to a massive backlog and possibly even a kitchen disaster if it isn't managed properly! Due to this overflow, attackers could exploit the vulnerability to cause a denial of service, essentially crashing the server. While the exact impact might be unspecified, the potential for chaos could range from service interruptions to more severe consequences if left unchecked!

Put simply

Think of this vulnerability like a restaurant where someone sends in an incredibly excessive order. The kitchen can't handle such an influx, leading to a massive backlog and possibly even a kitchen disaster if it isn't managed properly! This vulnerability stems from an integer overflow in the php_filter_encode_url function, which can be triggered by sending a long string. This leads to a heap-based buffer overflow, compromising the integrity of memory allocation and allowing an attacker to affect server performance.

What to do

Due to this overflow, attackers could exploit the vulnerability to cause a denial of service, essentially crashing the server. While the exact impact might be unspecified, the potential for chaos could range from service interruptions to more severe consequences if left unchecked! To protect yourself, make sure to upgrade your PHP version to at least 7.0.4, where this issue has been fixed. Additionally, conduct regular audits of your codebase to identify potentially risky functions that handle user input. You've got this! By staying vigilant and proactive, you're on your way to becoming a security hero! 🦸‍♂️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.05175 · 92.4th percentile
Published
2016-05-22T01:00Z
EPSS history
Timeline
  • 22 MAY 01:00Z
    Integer overflow in the php_filter_encode_url function in ext/filter/sanitizing_filters.c in PHP before 7.0.4 allows remote attackers to cause a denial of…
    cvelistv5