CVE-2016-6872

Integer overflow in StringUtil::implode in Facebook HHVM before 3.15.0 allows attackers to have unspecified impact via unknown vectors

published February 17, 2017

CVSS
—
EPSS
2%
Percentile
82.4
In the wild
Unconfirmed
What it is

⚠️ An integer overflow in Facebook's HHVM could lead to some unexpected consequences! Think of it like a jar that’s suddenly too full and starts overflowing—what happens next is anyone’s guess! This is akin to a restaurant kitchen where a recipe calls for a pinch of salt, but instead, the chef accidentally dumps an entire bag into the pot. The dish could turn out inedible, but no one knows why! While we don’t know exactly how bad this vulnerability could be, it’s clear that the potential for chaos is there. An attacker might exploit the overflow to cause instability or unexpected behavior in your application, leaving it vulnerable and user experience compromised!

Put simply

This is akin to a restaurant kitchen where a recipe calls for a pinch of salt, but instead, the chef accidentally dumps an entire bag into the pot. The dish could turn out inedible, but no one knows why! This vulnerability stems from an integer overflow in the StringUtil::implode function in HHVM versions prior to 3.15.0, allowing attackers to manipulate memory and potentially disrupt normal operation.

What to do

While we don’t know exactly how bad this vulnerability could be, it’s clear that the potential for chaos is there. An attacker might exploit the overflow to cause instability or unexpected behavior in your application, leaving it vulnerable and user experience compromised! To safeguard your application, update HHVM to version 3.15.0 or later. Regularly review your environment for any unpatched vulnerabilities and consider implementing additional monitoring to detect any suspicious activity. You've got this! Stay proactive, tackle the update, and keep that internet safe! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02219 · 82.4th percentile
Published
2017-02-17T17:00Z
EPSS history
Timeline
  • 17 FEB 17:00Z
    Integer overflow in StringUtil::implode in Facebook HHVM before 3.15.0 allows attackers to have unspecified impact via unknown vectors
    cvelistv5