SB2021090221 - Multiple vulnerabilities in MediaTek chipsets

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Main Vulnerability Database SB2021090221

SB2021090221 - Multiple vulnerabilities in MediaTek chipsets

Published: September 2, 2021 Updated: March 7, 2023

Security Bulletin ID SB2021090221
CSH Severity
High
Patch available
YES
Number of vulnerabilities 15
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 27% Low 73%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 15 vulnerabilities.


1) Information Exposure (CVE-ID: CVE-2021-0423)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to gain access to sensitive information.

The vulnerability exists due to uninitialized data within memory management driver. A local application can gain access to sensitive information.


2) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2021-0660)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local privileged application to gain access to sensitive information.

The vulnerability exists due to incorrect error handling within ccu. A local privileged application can gain access to sensitive information.


3) Use After Free (CVE-ID: CVE-2021-0612)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local privileged application to execute arbitrary code.

The vulnerability exists due to a use after free within m4u. A local privileged application can execute arbitrary code.


4) Use After Free (CVE-ID: CVE-2021-0611)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local privileged application to execute arbitrary code.

The vulnerability exists due to a use after free within m4u. A local privileged application can execute arbitrary code.


5) Integer overflow (CVE-ID: CVE-2021-0610)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to execute arbitrary code.

The vulnerability exists due to an integer overflow within memory management driver. A local application can execute arbitrary code.


6) Information Exposure (CVE-ID: CVE-2021-0425)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to gain access to sensitive information.

The vulnerability exists due to improper input validation within memory management driver. A local application can gain access to sensitive information.


7) Resource exhaustion (CVE-ID: CVE-2021-0424)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to perform service disruption.

The vulnerability exists due to a missing bounds check within memory management driver. A local application can perform service disruption.


8) Resource exhaustion (CVE-ID: CVE-2021-0422)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to perform service disruption.

The vulnerability exists due to a missing bounds check within memory management driver. A local application can perform service disruption.


9) Information Exposure (CVE-ID: CVE-2021-0681)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to gain access to sensitive information.

The vulnerability exists due to a missing permission check within system properties. A local application can gain access to sensitive information.


10) Out-of-bounds read (CVE-ID: CVE-2021-0421)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to gain access to sensitive information.

The vulnerability exists due to a missing bounds check within memory management driver. A local application can gain access to sensitive information.


11) Heap-based Buffer Overflow (CVE-ID: CVE-2021-32487)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to a heap buffer overflow within Modem 2G RRM. A remote attacker can trick the victim to open a specially crafted file and execute arbitrary code.


12) Heap-based Buffer Overflow (CVE-ID: CVE-2021-32486)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to a heap buffer overflow within Modem 2G RRM. A remote attacker can trick the victim to open a specially crafted file and execute arbitrary code.


13) Heap-based Buffer Overflow (CVE-ID: CVE-2021-32485)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to a heap buffer overflow within Modem 2G RRM. A remote attacker can trick the victim to open a specially crafted file and execute arbitrary code.


14) Heap-based Buffer Overflow (CVE-ID: CVE-2021-32484)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to a heap buffer overflow within Modem 2G RRM. A remote attacker can trick the victim to open a specially crafted file and execute arbitrary code.


15) Information Exposure (CVE-ID: CVE-2021-0680)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local application to gain access to sensitive information.

The vulnerability exists due to a missing permission check within system properties. A local application can gain access to sensitive information.


Remediation

Install update from vendor's website.

References