#VU72950 Out-of-bounds read in MediaTek products - CVE-2021-0413

Vulnerability identifier: #VU72950

Vulnerability risk: Low

CVSSv4.0: 1.1 [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]

CVE-ID: CVE-2021-0413

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MT5522
Mobile applications / Mobile firmware & hardware
MT5527
Mobile applications / Mobile firmware & hardware
MT5597
Mobile applications / Mobile firmware & hardware
MT5598
Mobile applications / Mobile firmware & hardware
MT5599
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
MT6750S
Mobile applications / Mobile firmware & hardware
MT6753
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
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
MT6833
Mobile applications / Mobile firmware & hardware
MT6897
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
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
MT8735A
Mobile applications / Mobile firmware & hardware
MT8735B
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
MT9256
Mobile applications / Mobile firmware & hardware
MT9285
Mobile applications / Mobile firmware & hardware
MT9286
Mobile applications / Mobile firmware & hardware
MT9288
Mobile applications / Mobile firmware & hardware
MT9629
Mobile applications / Mobile firmware & hardware
MT9631
Mobile applications / Mobile firmware & hardware
MT9632
Mobile applications / Mobile firmware & hardware
MT9636
Mobile applications / Mobile firmware & hardware
MT9638
Mobile applications / Mobile firmware & hardware
MT9639
Mobile applications / Mobile firmware & hardware
MT9650
Mobile applications / Mobile firmware & hardware
MT9652
Mobile applications / Mobile firmware & hardware
MT9669
Mobile applications / Mobile firmware & hardware
MT9670
Mobile applications / Mobile firmware & hardware
MT9675
Mobile applications / Mobile firmware & hardware
MT9685
Mobile applications / Mobile firmware & hardware
MT9686
Mobile applications / Mobile firmware & hardware
MT9688
Mobile applications / Mobile firmware & hardware
MT9931
Mobile applications / Mobile firmware & hardware
MT9950
Mobile applications / Mobile firmware & hardware
MT9970
Mobile applications / Mobile firmware & hardware
MT9980
Mobile applications / Mobile firmware & hardware
MT9981
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
MT8797
Hardware solutions / Firmware

Vendor: MediaTek

Description

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

The vulnerability exists due to a missing bounds check within flv extractor. A local application can gain access to sensitive information.

Mitigation
Install security update from vendor's website.

Vulnerable software versions

MT5522: All versions

MT5527: All versions

MT5597: All versions

MT5598: All versions

MT5599: All versions

MT6580: All versions

MT6735: All versions

MT6737: All versions

MT6739: All versions

MT6750S: All versions

MT6753: All versions

MT6755S: All versions

MT6757: All versions

MT6757C: All versions

MT6757CD: All versions

MT6757CH: 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

MT6833: All versions

MT6853: All versions

MT6853T: All versions

MT6873: All versions

MT6877: All versions

MT6885: All versions

MT6889: All versions

MT6897: 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

MT8786: All versions

MT8788: All versions

MT8789: All versions

MT8791: All versions

MT8797: All versions

MT9256: All versions

MT9285: All versions

MT9286: All versions

MT9288: All versions

MT9629: All versions

MT9631: All versions

MT9632: All versions

MT9636: All versions

MT9638: All versions

MT9639: All versions

MT9650: All versions

MT9652: All versions

MT9669: All versions

MT9670: All versions

MT9675: All versions

MT9685: All versions

MT9686: All versions

MT9688: All versions

MT9931: All versions

MT9950: All versions

MT9970: All versions

MT9980: All versions

MT9981: All versions

---

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