Google Android OS Could Allow for Remote Code Execution

Fortify Security Team
Apr 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 April 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 lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. (CVE-2021-0694, CVE-2021-39794, CVE-2021-39795, CVE-2021-39796, CVE-2021-39797, CVE-2021-39798, CVE-2021-39799)
  • Multiple vulnerabilities in Media Framework, the most severe vulnerability in this section could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.(CVE-2021-39803, CVE-2021-39804)
  • Multiple vulnerabilities in System, the most severe vulnerability in this section could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. (CVE-2021-39808, CVE-2021-39805, CVE-2021-39809, CVE-2021-39807)
  • Multiple vulnerabilities in the MediaProvider component of Project Mainline (CVE-2021-39795, CVE-2021-39803)
  • Multiple vulnerabilities in Kernel components, the most severe vulnerability in this section could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.(CVE-2021-0707, CVE-2021-39801, CVE-2021-39802, CVE-2021-39800)
  • Multiple high severity vulnerabilities in MediaTek A-GPS and Modem LTE RRC components. (CVE-2022-20081, CVE-2021-25477,)
  • Multiple high severity vulnerabilities in Qualcomm WLAN, Bluetooth, Kernel and Display components. (CVE-2021-35081, CVE-2021-35112, CVE-2021-35123, CVE-2021-30334, CVE-2021-35091, CVE-2021-35095, CVE-2021-35130)
  • Multiple high and critical severity vulnerabilities in Qualcomm closed-source components. (CVE-2021-30339, CVE-2021-30341, CVE-2021-30342, CVE-2021-30343, CVE-2021-30347, CVE-2021-35104, CVE-2021-30281, CVE-2021-30338, CVE-2021-30340, CVE-2021-30344, CVE-2021-30345, CVE-2021-30346, CVE-2021-30349, CVE-2021-30350, CVE-2021-35070, CVE-2021-35100)

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/2022-04-01

CVE:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35081
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35091
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35095
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35100
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35104
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35112
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35123
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35130
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39794
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39795
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39795
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39796
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39797
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39798
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39799
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39800
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39801
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39802
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39803
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39803
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39804
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39805
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39807
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39808
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39809
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-20081

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