CVE-2021-36161

Unprotected input value toString cause RCE

published September 9, 2021

CVSS
โ€”
EPSS
2%
Percentile
84.4
In the wild
Unconfirmed
What it is

โš ๏ธ A tiny oversight in Dubbo can lead to a troublesome surprise! When formatted strings in certain input arguments meet a customized bean, it could be game over for your runtime safety. ๐Ÿ˜ฑ Think of it like a recipe that calls for a pinch of salt โ€” if the wrong ingredient is added, it could turn a delicious meal into a disastrous culinary experience. Here, a mischievous bean could manipulate the output when the system is just trying to print a simple string! An attacker could craft a specially designed bean that, when printed, executes arbitrary code โ€” a recipe for disaster! This could allow malicious actors to take control of your system, potentially leading to data breaches or system failures. Yikes!

Put simply

Think of it like a recipe that calls for a pinch of salt โ€” if the wrong ingredient is added, it could turn a delicious meal into a disastrous culinary experience. Here, a mischievous bean could manipulate the output when the system is just trying to print a simple string! The vulnerability arises from Dubbo's mishandling of input arguments when calling the toString method on customized beans. This oversight could allow for remote code execution (RCE) if left unchecked.

What to do

An attacker could craft a specially designed bean that, when printed, executes arbitrary code โ€” a recipe for disaster! This could allow malicious actors to take control of your system, potentially leading to data breaches or system failures. Yikes! To protect yourself, update to Apache Dubbo version 2.7.13 or later as soon as possible. Review your bean implementations to ensure that they aren't inadvertently exposing sensitive operations via toString. Regularly audit your code for safe input handling! You've got this! A quick update will keep your system safe and sound. ๐Ÿ›ก๏ธ

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02467 ยท 84.4th percentile
Published
2021-09-09T07:45Z
EPSS history
Timeline
  • 09 SEP 07:45Z
    Unprotected input value toString cause RCE
    cvelistv5