#VU81347 Out-of-bounds write in MediaTek products - CVE-2023-20819

Vulnerability identifier: #VU81347

Vulnerability risk: Low

CVSSv4.0: 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-2023-20819

CWE-ID: CWE-787

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
MT2731
MT6570
MT6580
MT6595
MT6732
MT6735
MT6737
MT6737M
MT6738
MT6739
MT6750
MT6750S
MT6752
MT6753
MT6755
MT6757
MT6758
MT6761
MT6762
MT6762D
MT6762M
MT6763
MT6765
MT6765T
MT6767
MT6768
MT6769
MT6769T
MT6769Z
MT6771
MT6775
MT6783
MT6785T
MT6789
MT6795
MT6797
MT6799
MT6813
MT6815
MT6833
MT6835
MT6855
MT6875T
MT6878
MT6879
MT6886
MT6895
MT6895T
MT6896
MT6897
MT6983
MT6985
MT6989
MT8666
MT8666A
MT8667
MT8673
MT8675
MT8765
MT8766
MT8766Z
MT8768
MT8768A
MT8768B
MT8768T
MT8768Z
MT8781
MT8786
MT8788
MT8788T
MT8788X
MT8788Z
MT8791
MT8791T
MT8798
MT6779
MT6781
MT6785
MT6853
MT6873
MT6875
MT6877
MT6883
MT6885
MT6889
MT6891
MT6893
MT8797

Software vendor:
MediaTek

The vulnerability allows a local application to execute arbitrary code.

The vulnerability exists due to a missing bounds check within CDMA PPP protocol. A local application can execute arbitrary code.

Install security update from vendor's website.

• https://corp.mediatek.com/product-security-bulletin/October-2023