CVE-2020-10022CWE-120

UpdateHub Module Copies a Variable-Size Hash String Into a Fixed-Size Array

Critical · published May 11, 2020

CVSS v3.1
9.0
EPSS
2%
Percentile
83.3
In the wild
Unconfirmed
What it is

🚨 A malformed JSON payload from an UpdateHub server can wreak absolute havoc on Zephyr OS, triggering memory corruption faster than you can say 'denial of service'! 🔥 Think of it like a delivery of ingredients to a restaurant where a single tainted item could spoil an entire dish — if the kitchen doesn't check what's coming in, it can lead to a disastrous meal for everyone. 🍽️ In the best-case scenario, you might face a denial of service, leaving your systems unresponsive. However, in a more sinister twist, this vulnerability could allow an attacker to execute arbitrary code, essentially taking control of your system. Imagine your restaurant being taken over by a rogue chef!

Put simply

Think of it like a delivery of ingredients to a restaurant where a single tainted item could spoil an entire dish — if the kitchen doesn't check what's coming in, it can lead to a disastrous meal for everyone. 🍽️ This vulnerability arises from a malformed JSON payload that, when processed, can lead to unexpected memory corruption in Zephyr OS, impacting versions 2.1.0 and 2.2.0 and later.

What to do

In the best-case scenario, you might face a denial of service, leaving your systems unresponsive. However, in a more sinister twist, this vulnerability could allow an attacker to execute arbitrary code, essentially taking control of your system. Imagine your restaurant being taken over by a rogue chef! To patch this vulnerability, update to the latest version of Zephyr OS immediately. Review your update mechanisms to ensure they validate payloads before processing. It's also wise to implement logging to track incoming JSON payloads for any suspicious activity. You've got this! Fixing this issue will enhance your security posture and protect your systems like a fortress! 🛡️

The record
Technical detail
CVSS v3.1
9.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02319 · 83.3th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2020-05-11T22:26Z
EPSS history
Timeline
  • 11 MAY 22:26Z
    UpdateHub Module Copies a Variable-Size Hash String Into a Fixed-Size Array
    cvelistv5