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

ITS Advisory Number: 
2021-141
Date(s) Issued: 
Tuesday, November 2, 2021
Subject: 
Multiple Vulnerabilities in Google Android OS Could Allow for Remote Code Execution
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 indications that CVE-2021-1048 may be under limited, targeted exploitation.

 

Systems Affected: 

Android OS builds utilizing Security Patch Levels issued prior to November 6, 2021.

RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
High
BUSINESS
Large and medium business entities: 
High
Small business entities: 
High
Home Users: 
Low
Description: 

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 local attacker to gain access to additional permissions with no user interaction required. (CVE-2021-0799, CVE-2021-0921, CVE-2021-0923, CVE-2021-0926, CVE-2021-0933, CVE-2020-13871, CVE-2021-0653, CVE-2021-0922)
  • A vulnerability in Media Framework that could enable a local malicious application to bypass user interaction requirements in order to gain access to additional permissions. (CVE-2021-0928, CVE-2021-0650)
  • Multiple vulnerabilities in System could enable a remote attacker using a specially crafted transmission to execute arbitrary code within the context of a privileged process. (CVE-2021-0918, CVE-2021-0930, CVE-2021-0434, CVE-2021-0649, CVE-2021-0932, CVE-2021-0925, CVE-2021-0931, CVE-2021-0919)
  • Multiple vulnerabilities in Project Mainline components. (CVE-2021-0653, CVE-2021-0650, CVE-2021-0649)
  • Multiple vulnerabilities in Kernel components that could result in local escalation of privilege due to a use after free. (CVE-2021-0920, CVE-2021-0924, CVE-2021-0929, CVE-2021-1048)
  • Multiple vulnerabilities in Android TV that could enable a proximate attacker to silently pair with a TV and execute arbitrary code with no privileges or user interaction required. (CVE-2021-0889, CVE-2021-0927)
  • A high severity vulnerability in MediaTek components. (CVE-2021-0672)
  • Multiple critical severity vulnerabilities in Qualcomm closed-source components. (CVE-2021-1924, CVE-2021-1975)
  • Multiple high severity vulnerabilities in Qualcomm closed-source components. (CVE-2021-1921, CVE-2021-1973, CVE-2021-1979, CVE-2021-1981, CVE-2021-1982, CVE-2021-30254, CVE-2021-30255, CVE-2021-30259, CVE-2021-30284)

 

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.

 

Actions: 
  • After appropriate testing, immediately apply updates by Google Android or mobile carriers to vulnerable systems.
  • 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/2021-11-01#2021-11-06-secur...

CVE:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13871
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0434
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0649
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0649
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0650
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0650
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0653
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0672
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0799
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0889
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0918
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0919
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0920
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0921
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0922
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0923
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0924
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0925
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0926
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0927
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0928
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0929
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0930
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0931
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0932
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0933
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1048
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1921
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1924
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1973
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1975
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1979
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1981
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1982
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30254
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30255
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30259
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30284