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Multiple Vulnerabilities in Google Android OS Could Allow for Remote Code Execution

MS-ISAC ADVISORY NUMBER:

2021-043

DATE(S) ISSUED:

04/06/2021

OVERVIEW:

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 April 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-2021-0400, CVE-2021-0426, CVE-2021-0427, CVE-2021-0432, CVE-2021-0438, CVE-2021-0439, CVE-2021-0442)
  • Multiple vulnerabilities in Framework that could allow for Information Disclosure (CVE-2021-0443, CVE-2021-0444)
  • Multiple vulnerabilities in Media Framework that could allow for Escalation of Privilege (CVE-2021-0437)
  • Multiple vulnerabilities in Media Framework that could allow for Information Disclosure (CVE-2021-0436, CVE-2021-0471)
  • Multiple vulnerabilities in System that could allow for Remote Code Execution (CVE-2021-0430)
  • Multiple vulnerabilities in System that could allow for Escalation of Privilege (CVE-2021-0429, CVE-2021-0433, CVE-2021-0445, CVE-2021-0446)
  • Multiple vulnerabilities in System that could allow for Information Disclosure (CVE-2021-0428, CVE-2021-0431, CVE-2021-0435)
  • Multiple vulnerabilities in Kernel Components that could allow for Escalation of Privilege (CVE-2020-15436)
  • Multiple vulnerabilities in Kernel Components that could allow for Information Disclosure (CVE-2020-25705)
  • Multiple high severity vulnerabilities in MediaTek components (CVE-2021-0468)
  • Multiple critical severity vulnerabilities in Qualcomm components (CVE-2020-11210)
  • Multiple high severity vulnerabilities in Qualcomm components (CVE-2020-11191, CVE-2020-11236, CVE-2020-11237, CVE-2020-11242, CVE-2020-11243, CVE-2020-11245, CVE-2020-11246, CVE-2020-11247, CVE-2020-11251, CVE-2020-11252, CVE-2020-11255)

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:

CVE:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11191 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11210 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11236 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11237 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11242 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11243 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11245 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11246 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11247 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11251 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11252 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11255 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15436 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25705 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0400 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0425 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0426 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0427 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0428 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0429 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0430 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0431 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0432 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0433 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0435 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0436 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0437 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0438 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0439 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0442 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0443 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0444 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0445 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0446 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0468 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0471

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