Google Android OS Could Allow for Remote Code Execution

Fortify Security Team
Jan 5, 2022

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 January 5, 2022

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, the most severe of which could enable a local malicious application to bypass user interaction requirements in order to gain access to additional permissions. (CVE-2021-39630, CVE-2021-39632, CVE-2020-0338, CVE-2021-0934)
  • A vulnerability in Media Framework that could lead to remote escalation of privilege with no additional execution privileges or user interaction needed. (CVE-2021-39623)
  • Multiple vulnerabilities in System, the most severe of which could enable a local privileged attacker to install existing packages without requiring user consent. (CVE-2021-39618, CVE-2021-39620, CVE-2021-39621, CVE-2021-39622, CVE-2021-39625, CVE-2021-39626, CVE-2021-39627, CVE-2021-39629, CVE-2021-0643, CVE-2021-39628, CVE-2021-39659)
  • A vulnerability in Android Runtime that could enable a local attacker to bypass memory restrictions in order to gain access to additional permissions. (CVE-2021-0959)
  • Multiple vulnerabilities in Kernel components, the most severe of which could lead to a local escalation of privilege due to a race condition, with no additional execution privileges or user interaction needed. (CVE-2020-29368, CVE-2021-39634, CVE-2021-39633)
  • Multiple vulnerabilities in MediaTek components. (CVE-2021-31345, CVE-2021-31346, CVE-2021-31890, CVE-2021-40148, CVE-2021-31889)
  • A vulnerability in Unisoc components. (CVE-2021-1049)
  • Multiple high severity vulnerabilities in Qualcomm components. (CVE-2021-30319, CVE-2021-30353)
  • Multiple high and critical severity vulnerabilities in Qualcomm closed-source components. (CVE-2021-30285, CVE-2021-30287, CVE-2021-30300, CVE-2021-30301, CVE-2021-30307, CVE-2021-30308, CVE-2021-30311)

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/2022-01-01

CVE:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0338
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29368
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0643
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0934
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0959
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1049
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30285
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30287
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30300
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30301
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30307
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30308
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30311
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30319
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30353
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31345
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31346
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31889
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31890
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39618
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39620
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39621
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39622
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39623
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39625
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39626
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39627
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39628
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39629
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39630
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39632
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39633
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39634
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39659
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40148

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