CVE-2021-25437CWE-20

Improper access control vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows attackers to arbitrary code execution by replacing…

published July 8, 2021

CVSS
—
EPSS
2%
Percentile
83.6
In the wild
Unconfirmed
What it is

⚠️ A crafty trick in Tizen's FOTA service lets attackers replace firmware updates without breaking a sweat! 💻💥 Think of the FOTA update system as a restaurant that accepts any delivery without checking the order — a sneaky delivery driver could swap your gourmet meal for a mystery box of leftovers! If exploited, an attacker could replace legitimate firmware with malicious code, potentially taking control of the device. This could lead to unauthorized access, data breaches, or even complete device malfunction. A real nightmare for users trusting their devices!

Put simply

Think of the FOTA update system as a restaurant that accepts any delivery without checking the order — a sneaky delivery driver could swap your gourmet meal for a mystery box of leftovers! This vulnerability allows unauthorized access to replace firmware update files within the Tizen FOTA service, enabling arbitrary code execution without proper checks. It essentially bypasses critical security measures designed to ensure only validated updates are applied.

What to do

If exploited, an attacker could replace legitimate firmware with malicious code, potentially taking control of the device. This could lead to unauthorized access, data breaches, or even complete device malfunction. A real nightmare for users trusting their devices! Update the Tizen firmware to the latest release (JUL-2021 or later) to close this vulnerability. Regularly monitor and audit access controls in your firmware update processes to prevent unauthorized modifications. Stay vigilant! You've got this! Take action to secure your devices and maintain hero status in the cybersecurity realm! 🦸‍♂️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02352 · 83.6th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2021-07-08T13:47Z
EPSS history
Timeline
  • 08 JUL 13:47Z
    Improper access control vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows attackers to arbitrary code execution by replacing…
    cvelistv5