CVE-2023-20821 — MEDIUM (6.7)

Vulnerability Description

In nvram, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07937113; Issue ID: ALPS07937113.

CVSS Score

6.7

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Linuxfoundation	Yocto	2.6
Rdkcentral	Rdk-B	2022q3
Google	Android	11.0
Openwrt	Openwrt	19.07.0
Mediatek	Mt2713	-
Mediatek	Mt2735	-
Mediatek	Mt6833	-
Mediatek	Mt6835	-
Mediatek	Mt6853	-
Mediatek	Mt6855	-
Mediatek	Mt6873	-
Mediatek	Mt6875	-
Mediatek	Mt6877	-
Mediatek	Mt6879	-
Mediatek	Mt6880	-
Mediatek	Mt6883	-
Mediatek	Mt6885	-
Mediatek	Mt6886	-
Mediatek	Mt6889	-
Mediatek	Mt6890	-

Related Weaknesses (CWE)

CWE-787

References

https://corp.mediatek.com/product-security-bulletin/September-2023Vendor Advisory
https://corp.mediatek.com/product-security-bulletin/September-2023Vendor Advisory

FAQ

What is CVE-2023-20821?

CVE-2023-20821 is a vulnerability with a CVSS score of 6.7 (MEDIUM). In nvram, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not neede...

How severe is CVE-2023-20821?

CVE-2023-20821 has been rated MEDIUM with a CVSS base score of 6.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-20821?

Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Yocto, Rdkcentral Rdk-B, Google Android, Openwrt Openwrt, Mediatek Mt2713.