#VU72913 Heap-based Buffer Overflow in MediaTek products - CVE-2021-0576

Vulnerability identifier: #VU72913

Vulnerability risk: Low

CVSSv4.0: 5.9 [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]

CVE-ID: CVE-2021-0576

CWE-ID: CWE-122

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
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
MT6762
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
MT6779
Hardware solutions / Firmware
MT6785
Hardware solutions / Firmware
MT6853
Hardware solutions / Firmware
MT6853T
Hardware solutions / Firmware
MT6873
Hardware solutions / Firmware
MT6877
Hardware solutions / Firmware
MT6885
Hardware solutions / Firmware
MT6889
Hardware solutions / Firmware
MT6893
Hardware solutions / Firmware

Vendor: MediaTek

Description

The vulnerability allows a local application to execute arbitrary code.

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

Mitigation
Install security 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

MT6762: All versions

MT6763: All versions

MT6765: All versions

MT6768: All versions

MT6771: All versions

MT6779: 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

MT6885: All versions

MT6889: All versions

MT6893: All versions

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External links
https://corp.mediatek.com/product-security-bulletin/August-2021

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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.