CVE-2017-5641

Previous versions of Apache Flex BlazeDS (4.7.2 and earlier) did not restrict which types were allowed for AMF(X) object deserialization by default

published December 28, 2017

CVSS
—
EPSS
21%
Percentile
97.5
In the wild
Unconfirmed
What it is

🚨 A sneaky deserialization flaw in Apache Flex BlazeDS means untrusted data could execute malicious Java code. That's like handing someone your car keys, trusting they won't take it for a joyride! 🔥 Think of deserialization like assembling a toy from a box of parts — if the instructions are vague, you might end up with something you didn’t want! In this case, the untrusted data could lead to executing unwanted commands, almost like a toy that’s supposed to dance but instead throws a wild party. An attacker could exploit this vulnerability to run arbitrary code on your server, leading to potentially devastating consequences such as data breaches, service interruptions, or worse! If the attacker knows the right tricks, they can manipulate trusted applications into executing harmful commands, which can be a total nightmare for your security.

Put simply

Think of deserialization like assembling a toy from a box of parts — if the instructions are vague, you might end up with something you didn’t want! In this case, the untrusted data could lead to executing unwanted commands, almost like a toy that’s supposed to dance but instead throws a wild party. This vulnerability allows arbitrary code execution during the deserialization of AMF(X) objects in Apache Flex BlazeDS versions 4.7.2 and earlier. Essentially, it doesn't restrict the types of objects that can be deserialized, which opens the door for executing unintended operations.

What to do

An attacker could exploit this vulnerability to run arbitrary code on your server, leading to potentially devastating consequences such as data breaches, service interruptions, or worse! If the attacker knows the right tricks, they can manipulate trusted applications into executing harmful commands, which can be a total nightmare for your security. To protect your system, update Apache Flex BlazeDS to the latest version where this issue is resolved. Additionally, implement strict type validation during the deserialization process to ensure only trusted types are processed. Regularly audit your code for potential vulnerabilities! You've got this! By staying proactive, you can keep your system safe and sound. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.20747 · 97.5th percentile
Published
2017-12-28T15:00Z
EPSS history
Timeline
  • 28 DEC 15:00Z
    Previous versions of Apache Flex BlazeDS (4.7.2 and earlier) did not restrict which types were allowed for AMF(X) object deserialization by default
    cvelistv5