CVE-2021-45005

Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by conflicting JumpList of nested try/finally statements

published February 14, 2022

CVSS
—
EPSS
1%
Percentile
72.6
In the wild
Unconfirmed
What it is

⚠️ A heap buffer overflow lurks in Artifex MuJS v1.1.3, hidden within the twists of nested try/finally statements! This could get a little bumpy! Think of it like a mishap in a busy kitchen where a chef tries to juggle too many orders at once; if they mismanage their ingredients, the whole meal risks going awry! Similarly, when nested statements conflict, it creates room for chaos in the memory allocation. An attacker could potentially exploit this vulnerability to corrupt memory, which might lead to unexpected behavior or crashes of the application. While there's no confirmed exploitation yet, the risk of unpredictable performance is definitely something to keep an eye on!

Put simply

Think of it like a mishap in a busy kitchen where a chef tries to juggle too many orders at once; if they mismanage their ingredients, the whole meal risks going awry! Similarly, when nested statements conflict, it creates room for chaos in the memory allocation. This vulnerability occurs due to a heap buffer overflow, stemming from conflicting JumpList management in nested try/finally statements, allowing for potential memory corruption during execution.

What to do

An attacker could potentially exploit this vulnerability to corrupt memory, which might lead to unexpected behavior or crashes of the application. While there's no confirmed exploitation yet, the risk of unpredictable performance is definitely something to keep an eye on! To mitigate this risk, update to the latest version of Artifex MuJS if available. Regularly audit code for memory management issues, especially in areas involving complex control flow. Don't forget to enhance testing around these critical sections! You’ve got this! Stay proactive, and you’ll keep your codebase secure! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01416 · 72.6th percentile
Published
2022-02-14T21:47Z
EPSS history
Timeline
  • 14 FEB 21:47Z
    Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by conflicting JumpList of nested try/finally statements
    cvelistv5