Google Android OS Vulnerabilities Allow for Remote Code Execution

by | May 4, 2021 | Advisories

Multiple vulnerabilities have been discovered in the Google Android operating system (OS), the most severe of which could allow for remote code execution. Android is an operating system developed by Google for mobile devices, including, but not limited to, smartphones, tablets, and watches. Successful exploitation of the most severe of these vulnerabilities could allow for remote code execution within the context of a privileged process. Depending on the privileges associated with this application, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. If this application has been configured to have fewer user rights on the system, exploitation of the most severe of these vulnerabilities could have less impact than if it was configured with administrative rights.

THREAT INTELLIGENCE: There are currently no reports of these vulnerabilities being exploited in the wild.

SYSTEMS AFFECTED:

  • Android OS builds utilizing Security Patch Levels issued prior to May 5, 2021.

RISK:

Government:

  • Large and medium government entities: High
  • Small government entities: High

Businesses:

  • Large and medium business entities: High
  • Small business entities: High

Home users: Low

TECHNICAL SUMMARY:

Multiple vulnerabilities have been discovered in Google Android OS, the most severe of which could allow for remote code execution within the context of a privileged process. Details of these vulnerabilities are as follows:

  • Multiple vulnerabilities in Framework that could allow for Escalation of Privileges (CVE-2021-0472, CVE-2021-0485, CVE-2021-0487, CVE-2019-2219)
  • A vulnerability in Media Framework that could allow for Escalation of Privilege (CVE-2021-0482)
  • A vulnerability in Media Framework that could allow for Information Disclosure (CVE-2021-0484)
  • Multiple vulnerabilities in System that could allow for Remote Code Execution (CVE-2021-0473, CVE-2021-0474, CVE-2021-0475)
  • Multiple vulnerabilities in System that could allow for Escalation of Privilege (CVE-2021-0476,  CVE-2021-0477, CVE-2021-0481)
  • Multiple vulnerabilities in System that could allow for Information Disclosure (CVE-2021-0466, CVE-2021-0480)
  • A vulnerability in Kernel Components that could allow for Escalation of Privilege (CVE-2020-29661)
  • A Critical severity vulnerability in AMLogic components (CVE-2021-0467)
  • Multiple High severity vulnerabilities in ARM components (CVE-2021-28663, CVE-2021-28664)
  • Multiple High severity vulnerabilities in MediaTek components (CVE-2021-0489, CVE-2021-0490, CVE-2021-0491, CVE-2021-0492, CVE-2021-0493, CVE-2021-0494, CVE-2021-0495, CVE-2021-0496, CVE-2021-0497, CVE-2021-0498)
  • A High severity vulnerability in Unisoc components (CVE-2021-0324)
  • Multiple High severity vulnerabilities in Qualcomm components (CVE-2021-1891, CVE-2021-1905, CVE-2021-1927)
  • A Moderate severity vulnerability in Qualcomm components (CVE-2021-1906)
  • Multiple High severity vulnerabilities in Qualcomm closed-source components (CVE-2020-11273, CVE-2020-11274, CVE-2020-11279, CVE-2020-11284, CVE-2020-11285, CVE-2020-11288, CVE-2020-11289, CVE-2021-1910, CVE-2021-1915)

Successful exploitation of the most severe of these vulnerabilities could allow for remote code execution within the context of a privileged process. Depending on the privileges associated with this application, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. If this application has been configured to have fewer user rights on the system, exploitation of the most severe of these vulnerabilities could have less impact than if it was configured with administrative rights.

RECOMMENDATIONS:

We recommend the following actions be taken:

  • Apply appropriate updates by Google Android or mobile carriers to vulnerable systems, immediately after appropriate testing.
  • Remind users to only download applications from trusted vendors in the Play Store.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Inform and educate users regarding threats posed by hypertext links contained in emails or attachments, especially from un-trusted sources.

REFERENCES:
Google Android:
https://source.android.com/security/bulletin/2021-05-01

CVE:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-2219

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11273

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11274

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11279

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11284

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11285

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11288

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11289

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29661

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0324

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0466

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0467

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0472

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0473

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0474

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0475

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0476

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0477

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0480

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0481

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0482

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0484

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0485

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0487

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0489

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0490

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0491

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0492

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0493

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0494

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0495

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0496

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0497

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0498

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1891

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1905

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1906

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1910

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1915

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1927

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28663

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28664