CVE-2016-4000

Jython before 2.7.1rc1 allows attackers to execute arbitrary code via a crafted serialized PyFunction object

published July 6, 2017

CVSS
—
EPSS
6%
Percentile
93.5
In the wild
Unconfirmed
What it is

⚠️ A crafty crafted PyFunction object could unleash arbitrary code execution before Jython 2.7.1rc1! Think of it like a chef sneaking a recipe into the kitchen that the head chef never approved—once it's in, they can whip up anything, even a disaster!🍽️ An attacker could potentially run any code they want, turning your server into their personal playground. This could lead to data breaches, system manipulation, or worse—absolute chaos!

Put simply

Think of it like a chef sneaking a recipe into the kitchen that the head chef never approved—once it's in, they can whip up anything, even a disaster!🍽️ This vulnerability allows attackers to exploit a flaw in how Jython handles serialized PyFunction objects, enabling the execution of arbitrary code without authentication.

What to do

An attacker could potentially run any code they want, turning your server into their personal playground. This could lead to data breaches, system manipulation, or worse—absolute chaos! Upgrade your Jython to 2.7.1rc1 or later immediately to close this vulnerability. Regularly audit your code for any untrusted serialized objects, and consider applying security measures to validate inputs. 🛡️ You've got this! Taking these steps will help keep your environment secure and resilient! 💪✨

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.06206 · 93.5th percentile
Published
2017-07-06T16:00Z
EPSS history
Timeline
  • 06 JUL 16:00Z
    Jython before 2.7.1rc1 allows attackers to execute arbitrary code via a crafted serialized PyFunction object
    cvelistv5