Multiple vulnerabilities in MediaTek chipsets

Published: 2022-10-03

Risk	Medium
Patch available	YES
Number of vulnerabilities	11
CVE-ID	CVE-2022-26471 CVE-2022-26472 CVE-2022-26452 CVE-2022-26473 CVE-2022-26474 CVE-2022-26475 CVE-2022-32589 CVE-2022-32590 CVE-2022-32591 CVE-2022-32592 CVE-2022-32593
CWE-ID	CWE-502 CWE-264 CWE-119 CWE-404 CWE-416 CWE-20 CWE-787
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	MT6580 Mobile applications / Mobile firmware & hardware MT6739 Mobile applications / Mobile firmware & hardware MT6761 Mobile applications / Mobile firmware & hardware MT6765 Mobile applications / Mobile firmware & hardware MT6768 Mobile applications / Mobile firmware & hardware MT6789 Mobile applications / Mobile firmware & hardware MT6833 Mobile applications / Mobile firmware & hardware MT6855 Mobile applications / Mobile firmware & hardware MT6879 Mobile applications / Mobile firmware & hardware MT6895 Mobile applications / Mobile firmware & hardware MT6983 Mobile applications / Mobile firmware & hardware MT8321 Mobile applications / Mobile firmware & hardware MT8385 Mobile applications / Mobile firmware & hardware MT8666 Mobile applications / Mobile firmware & hardware MT8675 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 MT6762 Mobile applications / Mobile firmware & hardware MT6763 Mobile applications / Mobile firmware & hardware MT6769 Mobile applications / Mobile firmware & hardware MT6771 Mobile applications / Mobile firmware & hardware MT8168 Mobile applications / Mobile firmware & hardware MT8365 Mobile applications / Mobile firmware & hardware MT8695 Mobile applications / Mobile firmware & hardware MT8696 Mobile applications / Mobile firmware & hardware MT8798 Mobile applications / Mobile firmware & hardware MT7663 Mobile applications / Mobile firmware & hardware MT7902 Mobile applications / Mobile firmware & hardware MT7921 Mobile applications / Mobile firmware & hardware MT8167S Mobile applications / Mobile firmware & hardware MT8175 Mobile applications / Mobile firmware & hardware MT8183 Mobile applications / Mobile firmware & hardware MT8185 Mobile applications / Mobile firmware & hardware MT8362A Mobile applications / Mobile firmware & hardware MT8512A Mobile applications / Mobile firmware & hardware MT8518 Mobile applications / Mobile firmware & hardware MT8532 Mobile applications / Mobile firmware & hardware MT8667 Mobile applications / Mobile firmware & hardware MT7668 Mobile applications / Mobile firmware & hardware MT6753 Mobile applications / Mobile firmware & hardware MT6757 Mobile applications / Mobile firmware & hardware 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 MT6779 Hardware solutions / Firmware MT6875 Hardware solutions / Firmware MT6891 Hardware solutions / Firmware
Vendor	MediaTek

Security Bulletin

This security bulletin contains information about 11 vulnerabilities.

1) Deserialization of Untrusted Data

EUVDB-ID: #VU67838

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-26471

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

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

The vulnerability exists due to insecure input validation when processing serialized data within the telephony service. A local application can pass a specially crafted data to the affected service and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6580: All versions

MT6739: All versions

MT6761: All versions

MT6765: All versions

MT6768: All versions

MT6781: All versions

MT6785: All versions

MT6789: All versions

MT6833: All versions

MT6853: All versions

MT6853T: All versions

MT6855: All versions

MT6873: All versions

MT6877: All versions

MT6879: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6893: All versions

MT6895: All versions

MT6983: All versions

MT8321: All versions

MT8385: All versions

MT8666: All versions

MT8675: 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/October-2022

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.

2) Deserialization of Untrusted Data

EUVDB-ID: #VU67839

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-26472

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

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

The vulnerability exists due to insecure input validation when processing serialized data within the ims service. A local application can pass a specially crafted data to the affected service and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6739: All versions

MT6761: All versions

MT6762: All versions

MT6763: All versions

MT6765: All versions

MT6768: All versions

MT6769: All versions

MT6771: All versions

MT6779: All versions

MT6781: All versions

MT6785: All versions

MT6789: All versions

MT6833: All versions

MT6853: All versions

MT6853T: All versions

MT6855: All versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6879: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT6895: All versions

MT6983: All versions

MT8321: All versions

MT8385: All versions

MT8666: All versions

MT8675: 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/October-2022

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) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU67840

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-26452

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to improper locking within the isp component. A local application with System execution permissions can execute arbitrary code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6879: All versions

MT6895: All versions

MT6983: All versions

External links

http://corp.mediatek.com/product-security-bulletin/October-2022

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) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU67841

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-26473

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to improper locking within the vdec fmt component. A local application with System execution permissions can execute arbitrary code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6789: All versions

MT6855: All versions

MT6879: All versions

MT6895: All versions

MT6983: All versions

MT8168: All versions

MT8365: All versions

MT8695: All versions

MT8696: All versions

MT8798: All versions

External links

http://corp.mediatek.com/product-security-bulletin/October-2022

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) Buffer overflow

EUVDB-ID: #VU67842

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-26474

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in sensorhub. A local application can trigger memory corruption and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6789: All versions

MT6855: All versions

MT6879: All versions

MT6895: All versions

MT6983: All versions

External links

http://corp.mediatek.com/product-security-bulletin/October-2022

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) Buffer overflow

EUVDB-ID: #VU67843

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-26475

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in WLAN component. A local application can trigger memory corruption and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6761: All versions

MT6762: All versions

MT6765: All versions

MT6768: All versions

MT6769: All versions

MT6779: All versions

MT6781: All versions

MT6785: All versions

MT6789: All versions

MT6853: All versions

MT6855: All versions

MT6873: All versions

MT6875: All versions

MT6879: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6895: All versions

MT6983: All versions

MT7663: All versions

MT7902: All versions

MT7921: All versions

MT8167S: All versions

MT8175: All versions

MT8183: All versions

MT8185: All versions

MT8362A: All versions

MT8365: All versions

MT8385: All versions

MT8512A: All versions

MT8518: All versions

MT8532: All versions

MT8667: All versions

MT8695: All versions

MT8696: All versions

MT8766: All versions

MT8768: All versions

MT8786: All versions

MT8788: All versions

MT8789: All versions

External links

http://corp.mediatek.com/product-security-bulletin/October-2022

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 Resource Shutdown or Release

EUVDB-ID: #VU67844

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-32589

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper resource shutdown or release in Wi-Fi driver. A remote attacker can send specially crafted traffic to the affected device and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6761: All versions

MT6762: All versions

MT6765: All versions

MT6768: All versions

MT6779: All versions

MT6781: All versions

MT6785: All versions

MT6789: All versions

MT6833: All versions

MT6853: All versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6879: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT6895: All versions

MT6983: All versions

MT7663: All versions

MT7668: All versions

MT7902: All versions

MT7921: All versions

MT8167S: All versions

MT8175: All versions

MT8183: All versions

MT8185: All versions

MT8362A: All versions

MT8365: All versions

MT8385: All versions

MT8512A: All versions

MT8518: All versions

MT8532: All versions

MT8667: All versions

MT8766: All versions

MT8768: All versions

MT8786: All versions

MT8788: All versions

MT8789: All versions

External links

http://corp.mediatek.com/product-security-bulletin/October-2022

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

8) Use-after-free

EUVDB-ID: #VU67845

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-32590

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the WLAN component. A local application can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6761: All versions

MT6762: All versions

MT6765: All versions

MT6768: All versions

MT6769: All versions

MT6779: All versions

MT6781: All versions

MT6785: All versions

MT6789: All versions

MT6833: All versions

MT6853: All versions

MT6853T: All versions

MT6855: All versions

MT6873: All versions

MT6877: All versions

MT6879: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT6895: All versions

MT6983: All versions

MT7663: All versions

MT7668: All versions

MT7902: All versions

MT7921: All versions

MT8167S: All versions

MT8175: All versions

MT8183: All versions

MT8185: All versions

MT8362A: All versions

MT8365: All versions

MT8385: All versions

MT8512A: All versions

MT8518: All versions

MT8532: All versions

MT8667: All versions

MT8695: All versions

MT8696: All versions

MT8766: All versions

MT8768: All versions

MT8786: All versions

MT8788: All versions

MT8789: All versions

External links

http://corp.mediatek.com/product-security-bulletin/October-2022

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) Buffer overflow

EUVDB-ID: #VU67846

Risk: Medium

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

CVE-ID: CVE-2022-32591

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the ril component. A remote attacker can send specially crafted traffic to the device, trigger memory corruption and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6580: All versions

MT6739: All versions

MT6753: All versions

MT6757: All versions

MT6761: All versions

MT6762: All versions

MT6763: All versions

MT6765: All versions

MT6768: All versions

MT6779: All versions

MT6781: All versions

MT6785: All versions

MT6789: All versions

MT6833: All versions

MT6853: All versions

MT6853T: All versions

MT6855: All versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6879: All versions

MT6885: All versions

MT6893: All versions

MT6895: All versions

MT6983: All versions

MT8321: All versions

MT8385: All versions

MT8666: All versions

MT8675: 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/October-2022

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.

10) Input validation error

EUVDB-ID: #VU67847

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-32592

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation within cpu dvfs. A local application can execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6855: All versions

MT6879: All versions

MT6895: All versions

MT6983: All versions

MT8185: All versions

MT8321: All versions

MT8385: All versions

MT8518: All versions

MT8666: All versions

MT8675: All versions

MT8765: All versions

MT8768: All versions

MT8786: All versions

MT8788: All versions

MT8789: All versions

External links

http://corp.mediatek.com/product-security-bulletin/October-2022

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) Out-of-bounds write

EUVDB-ID: #VU67848

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-32593

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the vowe component. A local application can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MT6983: All versions

External links

http://corp.mediatek.com/product-security-bulletin/October-2022

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.