Multiple vulnerabilities in MediaTek Chipsets

Published: 2022-05-31 | Updated: 2023-03-07

Risk	Medium
Patch available	YES
Number of vulnerabilities	18
CVE-ID	CVE-2021-0674 CVE-2021-0675 CVE-2021-0900 CVE-2021-0895 CVE-2021-0894 CVE-2021-0893 CVE-2021-0679 CVE-2021-0678 CVE-2021-0677 CVE-2021-0676 CVE-2021-0904 CVE-2021-0901 CVE-2021-0903 CVE-2021-0902 CVE-2021-0899 CVE-2021-0898 CVE-2021-0897 CVE-2021-0896
CWE-ID	CWE-125 CWE-119 CWE-20 CWE-416 CWE-703 CWE-190 CWE-200 CWE-732 CWE-367
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	MT6570 Mobile applications / Mobile firmware & hardware MT6580 Mobile applications / Mobile firmware & hardware MT6735 Mobile applications / Mobile firmware & hardware MT6737 Mobile applications / Mobile firmware & hardware MT6739 Mobile applications / Mobile firmware & hardware MT6750 Mobile applications / Mobile firmware & hardware MT6750S Mobile applications / Mobile firmware & hardware MT6753 Mobile applications / Mobile firmware & hardware MT6755 Mobile applications / Mobile firmware & hardware MT6755S Mobile applications / Mobile firmware & hardware MT6757 Mobile applications / Mobile firmware & hardware MT6757C Mobile applications / Mobile firmware & hardware MT6757CD Mobile applications / Mobile firmware & hardware MT6757CH Mobile applications / Mobile firmware & hardware MT6758 Mobile applications / Mobile firmware & hardware MT6761 Mobile applications / Mobile firmware & hardware MT6763 Mobile applications / Mobile firmware & hardware MT6765 Mobile applications / Mobile firmware & hardware MT6768 Mobile applications / Mobile firmware & hardware MT6771 Mobile applications / Mobile firmware & hardware MT6797 Mobile applications / Mobile firmware & hardware MT6799 Mobile applications / Mobile firmware & hardware MT6833 Mobile applications / Mobile firmware & hardware MT8163 Mobile applications / Mobile firmware & hardware MT8167 Mobile applications / Mobile firmware & hardware MT8167S Mobile applications / Mobile firmware & hardware MT8168 Mobile applications / Mobile firmware & hardware MT8173 Mobile applications / Mobile firmware & hardware MT8175 Mobile applications / Mobile firmware & hardware MT8176 Mobile applications / Mobile firmware & hardware MT8183 Mobile applications / Mobile firmware & hardware MT8185 Mobile applications / Mobile firmware & hardware MT8195 Mobile applications / Mobile firmware & hardware MT8321 Mobile applications / Mobile firmware & hardware MT8362A Mobile applications / Mobile firmware & hardware MT8365 Mobile applications / Mobile firmware & hardware MT8385 Mobile applications / Mobile firmware & hardware MT8765 Mobile applications / Mobile firmware & hardware MT8766 Mobile applications / Mobile firmware & hardware MT8768 Mobile applications / Mobile firmware & hardware MT8786 Mobile applications / Mobile firmware & hardware MT8788 Mobile applications / Mobile firmware & hardware MT8789 Mobile applications / Mobile firmware & hardware MT8791 Mobile applications / Mobile firmware & hardware MT8771 Mobile applications / Mobile firmware & hardware MT6762 Mobile applications / Mobile firmware & hardware MT6769 Mobile applications / Mobile firmware & hardware MT8735A Mobile applications / Mobile firmware & hardware MT8735B Mobile applications / Mobile firmware & hardware MT6779 Hardware solutions / Firmware MT6781 Hardware solutions / Firmware MT6785 Hardware solutions / Firmware MT6853 Hardware solutions / Firmware MT6853T Hardware solutions / Firmware MT6873 Hardware solutions / Firmware MT6877 Hardware solutions / Firmware MT6883 Hardware solutions / Firmware MT6885 Hardware solutions / Firmware MT6889 Hardware solutions / Firmware MT6893 Hardware solutions / Firmware MT8797 Hardware solutions / Firmware MT6875 Hardware solutions / Firmware MT6891 Hardware solutions / Firmware
Vendor	MediaTek

Security Bulletin

This security bulletin contains information about 18 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU63831

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0674

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in alac decoder. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

MT6570: All versions

MT6580: All versions

MT6735: All versions

MT6737: All versions

MT6739: All versions

MT6750: All versions

MT6750S: All versions

MT6753: All versions

MT6755: All versions

MT6755S: All versions

MT6757: All versions

MT6757C: All versions

MT6757CD: All versions

MT6757CH: All versions

MT6758: All versions

MT6761: All versions

MT6763: All versions

MT6765: All versions

MT6768: All versions

MT6771: All versions

MT6779: All versions

MT6781: All versions

MT6785: All versions

MT6797: All versions

MT6799: All versions

MT6833: All versions

MT6853: All versions

MT6853T: All versions

MT6873: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6893: All versions

MT8163: All versions

MT8167: All versions

MT8167S: All versions

MT8168: All versions

MT8173: All versions

MT8175: All versions

MT8176: All versions

MT8183: All versions

MT8185: All versions

MT8195: All versions

MT8321: All versions

MT8362A: All versions

MT8365: All versions

MT8385: All versions

MT8765: All versions

MT8766: All versions

MT8768: All versions

MT8786: All versions

MT8788: All versions

MT8789: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021
http://cpr-zero.checkpoint.com/vulns/cprid-2187/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Buffer overflow

EUVDB-ID: #VU63834

Risk: Low

CVSSv3.1: 7.3 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0675

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local attacker to escalate privileges on the system.

The vulnerability exists due to a boundary error in alac decoder. A local attacker can trigger memory corruption and gain elevated privileges on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6570: All versions

MT6580: All versions

MT6735: All versions

MT6737: All versions

MT6739: All versions

MT6750: All versions

MT6750S: All versions

MT6753: All versions

MT6755: All versions

MT6755S: All versions

MT6757: All versions

MT6757C: All versions

MT6757CD: All versions

MT6757CH: All versions

MT6758: All versions

MT6761: All versions

MT6763: All versions

MT6765: All versions

MT6768: All versions

MT6771: All versions

MT6779: All versions

MT6781: All versions

MT6785: All versions

MT6797: All versions

MT6799: All versions

MT6833: All versions

MT6853: All versions

MT6853T: All versions

MT6873: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6893: All versions

MT8163: All versions

MT8167: All versions

MT8167S: All versions

MT8168: All versions

MT8173: All versions

MT8175: All versions

MT8176: All versions

MT8183: All versions

MT8185: All versions

MT8195: All versions

MT8321: All versions

MT8362A: All versions

MT8365: All versions

MT8385: All versions

MT8765: All versions

MT8766: All versions

MT8768: All versions

MT8786: All versions

MT8788: All versions

MT8789: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021
http://cpr-zero.checkpoint.com/vulns/cprid-2188/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Improper Input Validation

EUVDB-ID: #VU72997

Risk: Low

CVSSv3.1: 2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0900

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to an incorrect bounds check within apusys. A local privileged application can gain access to sensitive information.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Memory corruption

EUVDB-ID: #VU72992

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0895

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a missing bounds check within apusys. A local privileged application can execute arbitrary code.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Memory corruption

EUVDB-ID: #VU72991

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0894

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a missing bounds check within apusys. A local privileged application can execute arbitrary code.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Use After Free

EUVDB-ID: #VU72990

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0893

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

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

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Improper Check or Handling of Exceptional Conditions

EUVDB-ID: #VU72989

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0679

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

Exploit availability: No

Description

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

The vulnerability exists due to a missing bounds check within apusys. A local privileged application can execute arbitrary code.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Memory corruption

EUVDB-ID: #VU72988

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0678

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a missing bounds check within apusys. A local privileged application can execute arbitrary code.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Integer overflow

EUVDB-ID: #VU72987

Risk: Low

CVSSv3.1: 2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0677

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to an integer overflow within ccu driver. A local privileged application can gain access to sensitive information.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6833: All versions

MT6853: All versions

MT6873: All versions

MT6877: All versions

MT6885: All versions

MT6889: All versions

MT8771: All versions

MT8791: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

10) Information Exposure

EUVDB-ID: #VU72986

Risk: Low

CVSSv3.1: 2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0676

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to an incorrect bounds check within geniezone driver. A local privileged application can gain access to sensitive information.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6762: All versions

MT6765: All versions

MT6768: All versions

MT6769: All versions

MT6771: All versions

MT6779: All versions

MT6781: All versions

MT6785: All versions

MT6833: All versions

MT6853: All versions

MT6853T: All versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8163: All versions

MT8167: All versions

MT8167S: All versions

MT8168: All versions

MT8173: All versions

MT8175: All versions

MT8183: All versions

MT8185: All versions

MT8195: All versions

MT8321: All versions

MT8362A: All versions

MT8365: All versions

MT8385: All versions

MT8735A: All versions

MT8735B: All versions

MT8765: All versions

MT8766: All versions

MT8768: All versions

MT8771: All versions

MT8786: All versions

MT8788: All versions

MT8789: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

11) Incorrect Permission Assignment for Critical Resource

EUVDB-ID: #VU72985

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0904

CWE-ID: CWE-732 - Incorrect Permission Assignment for Critical Resource

Exploit availability: No

Description

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

The vulnerability exists due to an insecure permission setting within SRAMROM. A local privileged application can execute arbitrary code.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6771: All versions

MT8183: All versions

MT8385: All versions

MT8788: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

12) Integer overflow

EUVDB-ID: #VU72998

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0901

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to a missing bounds check within apusys. A local privileged application can execute arbitrary code.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

13) Memory corruption

EUVDB-ID: #VU73000

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0903

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a missing bounds check within apusys. A local privileged application can execute arbitrary code.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

14) Improper Input Validation

EUVDB-ID: #VU72999

Risk: Low

CVSSv3.1: 2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0902

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to an incorrect bounds check within apusys. A local privileged application can gain access to sensitive information.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

15) Use After Free

EUVDB-ID: #VU72996

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0899

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

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

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

16) Use After Free

EUVDB-ID: #VU72995

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0898

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

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

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

17) Time-of-check Time-of-use (TOCTOU) Race Condition

EUVDB-ID: #VU72994

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0897

CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Exploit availability: No

Description

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

The vulnerability exists due to a missing bounds check within apusys. A local privileged application can execute arbitrary code.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

18) Memory corruption

EUVDB-ID: #VU72993

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0896

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a missing bounds check within apusys. A local privileged application can execute arbitrary code.

Mitigation

Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT8195: All versions

MT8791: All versions

MT8797: All versions

External links

http://corp.mediatek.com/product-security-bulletin/December-2021

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.