CVE-2020-27221CWE-121

In Eclipse OpenJ9 up to and including version 0.23, there is potential for a stack-based buffer overflow when the virtual machine or JNI natives are converting…

published January 21, 2021

CVSS
—
EPSS
2%
Percentile
74.9
In the wild
Unconfirmed
What it is

⚠️ A sneaky stack-based buffer overflow lurks in Eclipse OpenJ9 versions up to 0.23, just waiting for the wrong UTF-8 character conversion to crash the party! Think of it like a poorly designed restaurant where a big order of spaghetti gets jammed in a tiny kitchen passage – one wrong twist and the whole operation could go down in a heap of noodles! 🍝 If exploited, this vulnerability could allow an attacker to cause unexpected behavior, potentially crashing the Java Virtual Machine. While it’s not actively being exploited, the risk of instability could lead to catastrophic failures in applications relying on OpenJ9.

Put simply

Think of it like a poorly designed restaurant where a big order of spaghetti gets jammed in a tiny kitchen passage – one wrong twist and the whole operation could go down in a heap of noodles! 🍝 This vulnerability arises when the OpenJ9 VM or JNI natives mishandle conversions from UTF-8 character encoding to the platform's encoding, allowing for a buffer overflow on the stack.

What to do

If exploited, this vulnerability could allow an attacker to cause unexpected behavior, potentially crashing the Java Virtual Machine. While it’s not actively being exploited, the risk of instability could lead to catastrophic failures in applications relying on OpenJ9. Update Eclipse OpenJ9 to version 0.24 or later to patch this vulnerability. It's also wise to conduct a thorough audit of character encoding practices in your applications to mitigate risks further. You've got this! A quick update will help you lock things down and keep your applications running smoothly. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01551 · 74.9th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2021-01-21T04:55Z
EPSS history
Timeline
  • 21 JAN 04:55Z
    In Eclipse OpenJ9 up to and including version 0.23, there is potential for a stack-based buffer overflow when the virtual machine or JNI natives are converting…
    cvelistv5