PT-2021-16626 · Samsung · Tizen Bootloader

Donghun Seo + 5 · Published 2021-07-08 · Updated 2021-07-14 · CVE-2021-25435

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Tizen bootloader versions prior to Firmware update JUL-2021 Release

Description: The issue is related to improper input validation in the Tizen bootloader, which allows for arbitrary code execution using the recovery partition when the device is in wireless firmware download mode.

Recommendations: For versions prior to Firmware update JUL-2021 Release, update to the Firmware update JUL-2021 Release or later to resolve the issue.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2021-25435

Affected Products

Tizen Bootloader

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-25435 · Security Note
• https://osv.dev/vulnerability/CVE-2021-25435 · Vendor Advisory
• https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=7 · Vendor Advisory
• https://t.me/cvenotify/17606 · Telegram Post
• https://t.me/cvenotify/17256 · Telegram Post