PT-2021-16661 · Unknown · Security Mode Command Process

Mounir Elgharabawy · Published 2021-10-06 · Updated 2021-10-13 · CVE-2021-25471

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Security Mode Command process versions prior to SMR Oct-2021 Release 1

Description: The issue is related to a lack of replay attack protection in the Security Mode Command process. This can lead to denial of service on mobile network connections and cause battery depletion.

Recommendations: For versions prior to SMR Oct-2021 Release 1, update to SMR Oct-2021 Release 1 or later to resolve the issue. As a temporary workaround, consider restricting access to the Security Mode Command process to minimize the risk of exploitation.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2021-25471

Affected Products

Security Mode Command Process

References · 4

• https://osv.dev/vulnerability/CVE-2021-25471 · Vendor Advisory
• https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-25471 · Security Note
• https://t.me/cibsecurity/30096 · Telegram Post