Out of Bounds Write Vulnerability in MediaTek NVRAM
CVE-2023-20821

6.7MEDIUM

Key Information:

Vendor
MediaTek
Status
Mt2713, Mt2735, Mt6833, Mt6835, Mt6853, Mt6855, Mt6873, Mt6875, Mt6877, Mt6879, Mt6880, Mt6883, Mt6885, Mt6886, Mt6889, Mt6890, Mt6891, Mt6893, Mt6895, Mt6980, Mt6983, Mt6985, Mt6990, Mt8167, Mt8167s, Mt8168, Mt8173, Mt8175, Mt8185, Mt8188, Mt8195, Mt8321, Mt8362a, Mt8365, Mt8385, Mt8395, Mt8666, Mt8673, Mt8675, Mt8765, Mt8766, Mt8768, Mt8781, Mt8786, Mt8788, Mt8789, Mt8791, Mt8791t, Mt8797
Vendor
CVE Published:
4 September 2023

Summary

A vulnerability exists in MediaTek's NVRAM that allows for an out of bounds write due to a lack of sufficient bounds checking. This weakness could enable an attacker to perform local privilege escalation, potentially allowing unauthorized access to System execution privileges. Notably, user interaction is not required for the exploitation of this flaw, posing a risk in environments where the affected systems are utilized.

Affected Version(s)

MT2713, MT2735, MT6833, MT6835, MT6853, MT6855, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6980, MT6983, MT6985, MT6990, MT8167, MT8167S, MT8168, MT8173, MT8175, MT8185, MT8188, MT8195, MT8321, MT8362A, MT8365, MT8385, MT8395, MT8666, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797 Android 11.0, 12.0, 13.0 / OpenWrt 1907, 2102 / Yocto 2.6 / RDK-B 22Q3

References

https://corp.mediatek.com/product-security-bulletin/Septe...

CVSS V3.1

Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.