CVE-2021-31649

In applications using jfinal 4.9.08 and below, there is a deserialization vulnerability when using redis,may be vulnerable to remote code execute

published June 24, 2021

CVSS
—
EPSS
2%
Percentile
78.6
In the wild
Unconfirmed
What it is

⚠️ A deserialization hiccup in jfinal could let attackers run arbitrary code! If you're using versions 4.9.08 or below, this one’s for you! 💥 Think of it like a recipe that’s followed blindly — if the chef doesn’t check the ingredients, they could end up baking a toxic cake that nobody should eat! In this case, the application accepts unverified data that can lead to unexpected behavior. If exploited, an attacker could execute malicious code on your server, potentially leading to a complete system takeover. This could mean losing sensitive data, corrupting your application, or even worse, using your server to launch attacks on others!

Put simply

Think of it like a recipe that’s followed blindly — if the chef doesn’t check the ingredients, they could end up baking a toxic cake that nobody should eat! In this case, the application accepts unverified data that can lead to unexpected behavior. This vulnerability stems from insecure deserialization when using Redis with jfinal, allowing attackers to manipulate the serialized data and execute arbitrary commands on the server.

What to do

If exploited, an attacker could execute malicious code on your server, potentially leading to a complete system takeover. This could mean losing sensitive data, corrupting your application, or even worse, using your server to launch attacks on others! To protect yourself, upgrade jfinal to the latest version immediately. Review your use of Redis and ensure that you have proper input validation in place to mitigate deserialization risks. Regularly audit your application for dependencies that may also need updating. You've got this! With these steps, you're on your way to securing your application! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01820 · 78.6th percentile
Published
2021-06-24T15:07Z
EPSS history
Timeline
  • 24 JUN 15:07Z
    In applications using jfinal 4.9.08 and below, there is a deserialization vulnerability when using redis,may be vulnerable to remote code execute
    cvelistv5