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Security Advisories

Google Android OS Could Allow for Remote Code Execution

Fortify Security Team
Sep 8, 2021

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 September 5, 2021.

RISK:

Government:

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

Businesses:

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

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 enable a remote attacker using a specially crafted file to cause a permanent denial of service. (CVE-2021-0595, CVE-2021-0683, CVE-2021-0684, CVE-2021-0685, CVE-2021-0687, CVE-2021-0688)
  • Multiple vulnerabilities in Media Framework that could enable a local malicious application to bypass operating system protections that isolate application data from other applications. (CVE-2021-0689, CVE-2021-0690)
  • Multiple vulnerabilities in System that could enable a local attacker using a specially crafted transmission to gain access to additional permissions. (CVE-2021-0428, CVE-2021-0598, CVE-2021-0644, CVE-2021-0682, CVE-2021-0691, CVE-2021-0692, CVE-2021-0693)
  • A vulnerability in Kernel components could enable a local malicious application to bypass operating system protections that isolate application data from other applications. (CVE-2021-0695)
  • Multiple high severity vulnerabilities in MediaTek Components. (CVE-2021-0680, CVE-2021-0681)
  • Multiple high severity vulnerabilities in Unisoc Components. (CVE-2021-0635, CVE-2021-0636)
  • Multiple high severity vulnerabilities in Qualcomm components. (CVE-2021-1941, CVE-2021-1948, CVE-2021-1974, CVE-2021-30290, CVE-2021-30294)
  • Multiple critical and high severity vulnerabilities in Qualcomm closed-source components (CVE-2021-1886, CVE-2021-1888, CVE-2021-1889, CVE-2021-1890, CVE-2021-1933, CVE-2021-1946, CVE-2021-1909, CVE-2021-1923, CVE-2021-1934, CVE-2021-1935, CVE-2021-1952, CVE-2021-1971, CVE-2021-30295)

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/2021-09-01

CVE:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0595

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0683

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0684

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0685

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0687

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0688

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0689

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0690

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0428

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0598

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0644

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0682

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0691

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0692

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0693

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0695

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0680

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0681

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0635

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0636

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1941

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1948

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1974

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30290

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30294

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1886

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1888

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1889

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1890

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1933

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1946

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1909

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1923

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1934

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1935

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1952

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1971

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30295

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