high
7.8
CWE
269 280
Advisory Published
Updated

CVE-2023-21421

First published: Thu Feb 09 2023(Updated: )

Improper Handling of Insufficient Permissions or Privileges vulnerability in KnoxCustomManagerService prior to SMR Jan-2023 Release 1 allows attacker to access device SIM PIN.

Credit: mobile.security@samsung.com

Affected SoftwareAffected VersionHow to fix
Samsung Android=10.0
Samsung Android=10.0-smr-apr-2020-r1
Samsung Android=10.0-smr-apr-2021-r1
Samsung Android=10.0-smr-apr-2022-r1
Samsung Android=10.0-smr-apr-2023-r1
Samsung Android=10.0-smr-aug-2020-r1
Samsung Android=10.0-smr-aug-2021-r1
Samsung Android=10.0-smr-aug-2022-r1
Samsung Android=10.0-smr-aug-2023-r1
Samsung Android=10.0-smr-dec-2019-r1
Samsung Android=10.0-smr-dec-2020-r1
Samsung Android=10.0-smr-dec-2021-r1
Samsung Android=10.0-smr-dec-2022-r1
Samsung Android=10.0-smr-dec-2023-r1
Samsung Android=10.0-smr-feb-2020-r1
Samsung Android=10.0-smr-feb-2021-r1
Samsung Android=10.0-smr-feb-2022-r1
Samsung Android=10.0-smr-feb-2023-r1
Samsung Android=10.0-smr-jan-2020-r1
Samsung Android=10.0-smr-jan-2021-r1
Samsung Android=10.0-smr-jan-2022-r1
Samsung Android=10.0-smr-jul-2020-r1
Samsung Android=10.0-smr-jul-2021-r1
Samsung Android=10.0-smr-jul-2022-r1
Samsung Android=10.0-smr-jul-2023-r1
Samsung Android=10.0-smr-jun-2020-r1
Samsung Android=10.0-smr-jun-2021-r1
Samsung Android=10.0-smr-jun-2022-r1
Samsung Android=10.0-smr-jun-2023-r1
Samsung Android=10.0-smr-mar-2020-r1
Samsung Android=10.0-smr-mar-2021-r1
Samsung Android=10.0-smr-mar-2022-r1
Samsung Android=10.0-smr-mar-2023-r1
Samsung Android=10.0-smr-may-2020-r1
Samsung Android=10.0-smr-may-2021-r1
Samsung Android=10.0-smr-may-2022-r1
Samsung Android=10.0-smr-may-2023-r1
Samsung Android=10.0-smr-nov-2019-r1
Samsung Android=10.0-smr-nov-2020-r1
Samsung Android=10.0-smr-nov-2021-r1
Samsung Android=10.0-smr-nov-2022-r1
Samsung Android=10.0-smr-nov-2023-r1
Samsung Android=10.0-smr-oct-2020-r1
Samsung Android=10.0-smr-oct-2021-r1
Samsung Android=10.0-smr-oct-2022-r1
Samsung Android=10.0-smr-oct-2023-r1
Samsung Android=10.0-smr-sep-2020-r1
Samsung Android=10.0-smr-sep-2021-r1
Samsung Android=10.0-smr-sep-2022-r1
Samsung Android=10.0-smr-sep-2023-r1
Samsung Android=11.0
Samsung Android=11.0-smr-apr-2021-r1
Samsung Android=11.0-smr-apr-2022-r1
Samsung Android=11.0-smr-apr-2023-r1
Samsung Android=11.0-smr-aug-2021-r1
Samsung Android=11.0-smr-aug-2022-r1
Samsung Android=11.0-smr-aug-2023-r1
Samsung Android=11.0-smr-dec-2020-r1
Samsung Android=11.0-smr-dec-2021-r1
Samsung Android=11.0-smr-dec-2022-r1
Samsung Android=11.0-smr-dec-2023-r1
Samsung Android=11.0-smr-feb-2021-r1
Samsung Android=11.0-smr-feb-2022-r1
Samsung Android=11.0-smr-feb-2023-r1
Samsung Android=11.0-smr-jan-2021-r1
Samsung Android=11.0-smr-jan-2022-r1
Samsung Android=11.0-smr-jul-2021-r1
Samsung Android=11.0-smr-jul-2022-r1
Samsung Android=11.0-smr-jul-2023-r1
Samsung Android=11.0-smr-jun-2021-r1
Samsung Android=11.0-smr-jun-2022-r1
Samsung Android=11.0-smr-jun-2023-r1
Samsung Android=11.0-smr-mar-2021-r1
Samsung Android=11.0-smr-mar-2022-r1
Samsung Android=11.0-smr-mar-2023-r1
Samsung Android=11.0-smr-may-2021-r1
Samsung Android=11.0-smr-may-2022-r1
Samsung Android=11.0-smr-may-2023-r1
Samsung Android=11.0-smr-nov-2021-r1
Samsung Android=11.0-smr-nov-2022-r1
Samsung Android=11.0-smr-nov-2023-r1
Samsung Android=11.0-smr-oct-2021-r1
Samsung Android=11.0-smr-oct-2022-r1
Samsung Android=11.0-smr-oct-2023-r1
Samsung Android=11.0-smr-sep-2021-r1
Samsung Android=11.0-smr-sep-2022-r1
Samsung Android=11.0-smr-sep-2023-r1
Samsung Android=12.0
Samsung Android=12.0-smr-apr-2022-r1
Samsung Android=12.0-smr-apr-2023-r1
Samsung Android=12.0-smr-aug-2022-r1
Samsung Android=12.0-smr-aug-2023-r1
Samsung Android=12.0-smr-dec-2021-r1
Samsung Android=12.0-smr-dec-2022-r1
Samsung Android=12.0-smr-dec-2023-r1
Samsung Android=12.0-smr-feb-2022-r1
Samsung Android=12.0-smr-feb-2023-r1
Samsung Android=12.0-smr-jan-2022-r1
Samsung Android=12.0-smr-jul-2022-r1
Samsung Android=12.0-smr-jul-2023-r1
Samsung Android=12.0-smr-jun-2022-r1
Samsung Android=12.0-smr-jun-2023-r1
Samsung Android=12.0-smr-mar-2022-r1
Samsung Android=12.0-smr-mar-2023-r1
Samsung Android=12.0-smr-may-2022-r1
Samsung Android=12.0-smr-may-2023-r1
Samsung Android=12.0-smr-nov-2021-r1
Samsung Android=12.0-smr-nov-2022-r1
Samsung Android=12.0-smr-nov-2023-r1
Samsung Android=12.0-smr-oct-2022-r1
Samsung Android=12.0-smr-oct-2023-r1
Samsung Android=12.0-smr-sep-2022-r1
Samsung Android=12.0-smr-sep-2023-r1
Samsung Android=13.0
Samsung Android=13.0-smr-apr-2023-r1
Samsung Android=13.0-smr-aug-2023-r1
Samsung Android=13.0-smr-dec-2022-r1
Samsung Android=13.0-smr-dec-2023-r1
Samsung Android=13.0-smr-feb-2023-r1
Samsung Android=13.0-smr-jul-2023-r1
Samsung Android=13.0-smr-jun-2023-r1
Samsung Android=13.0-smr-mar-2023-r1
Samsung Android=13.0-smr-may-2023-r1
Samsung Android=13.0-smr-nov-2022-r1
Samsung Android=13.0-smr-nov-2023-r1
Samsung Android=13.0-smr-oct-2022-r1
Samsung Android=13.0-smr-oct-2023-r1
Samsung Android=13.0-smr-sep-2023-r1

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-21421?

    CVE-2023-21421 is considered a high severity vulnerability allowing unauthorized access to the device SIM PIN.

  • How do I fix CVE-2023-21421?

    To mitigate CVE-2023-21421, update your Samsung device to the January 2023 security patch or later.

  • What products are affected by CVE-2023-21421?

    CVE-2023-21421 affects select versions of Samsung Android 10.0 and 11.0 operating systems.

  • Is there a workaround for CVE-2023-21421?

    There is no official workaround for CVE-2023-21421; applying the update is recommended.

  • Can CVE-2023-21421 be exploited remotely?

    CVE-2023-21421 may not require physical access to exploit, which increases its risk.

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