CVE-2023-20821
First published: Mon Sep 04 2023(Updated: )
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.
Credit: security@mediatek.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| Any of | ||
| Yocto Project | =2.6 | |
| RDK Central RDKB | =2022q3 | |
| Android | =11.0 | |
| Android | =12.0 | |
| Android | =13.0 | |
| Open edX | =19.07.0 | |
| Open edX | =21.02.0 | |
| Any of | ||
| MediaTek MT2713 | ||
| MediaTek MT2735 | ||
| MediaTek MT6833 | ||
| MediaTek MT6835 | ||
| MediaTek MT6853 | ||
| MediaTek MT6855 | ||
| MediaTek MT6873 | ||
| MediaTek MT6875T | ||
| MediaTek MT6877 | ||
| MediaTek MT6879 | ||
| MediaTek MT6880 | ||
| MediaTek MT6883 | ||
| MediaTek MT6885 | ||
| MediaTek MT6886 | ||
| MediaTek MT6889 | ||
| MediaTek MT6890 | ||
| MediaTek MT6891 | ||
| MediaTek MT6893 | ||
| MediaTek MT6895 | ||
| MediaTek MT6980D | ||
| MediaTek MT6983 | ||
| MediaTek MT6985T | ||
| MediaTek MT6990 | ||
| Mediatek MT8167 | ||
| MediaTek MT8167S Firmware | ||
| MediaTek MT8168 | ||
| MediaTek MT8173 | ||
| MediaTek MT8175 Firmware | ||
| MediaTek MT8185 | ||
| MediaTek MT8188 | ||
| MediaTek MT8195Z | ||
| MediaTek MT8321 | ||
| MediaTek MT8362A Firmware | ||
| MediaTek MT8365 Firmware | ||
| MediaTek MT8385 Firmware | ||
| MediaTek MT8395 | ||
| MediaTek MT8666 | ||
| MediaTek MT8673 | ||
| MediaTek MT8675 | ||
| MediaTek MT8765 | ||
| MediaTek MT8766Z | ||
| MediaTek MT8768 | ||
| MediaTek MT8781 WiFi | ||
| MediaTek MT8786 | ||
| MediaTek MT8788 Firmware | ||
| MediaTek MT8789 | ||
| MediaTek MT8791 WiFi | ||
| MediaTek MT8791T | ||
| MediaTek MT8797 | ||
| Yocto Project | =2.6 | |
| RDK Central RDKB | =2022q3 | |
| Android | =11.0 | |
| Android | =12.0 | |
| Android | =13.0 | |
| Open edX | =19.07.0 | |
| Open edX | =21.02.0 | |
| MediaTek MT2713 | ||
| MediaTek MT2735 | ||
| MediaTek MT6833 | ||
| MediaTek MT6835 | ||
| MediaTek MT6853 | ||
| MediaTek MT6855 | ||
| MediaTek MT6873 | ||
| MediaTek MT6875T | ||
| MediaTek MT6877 | ||
| MediaTek MT6879 | ||
| MediaTek MT6880 | ||
| MediaTek MT6883 | ||
| MediaTek MT6885 | ||
| MediaTek MT6886 | ||
| MediaTek MT6889 | ||
| MediaTek MT6890 | ||
| MediaTek MT6891 | ||
| MediaTek MT6893 | ||
| MediaTek MT6895 | ||
| MediaTek MT6980D | ||
| MediaTek MT6983 | ||
| MediaTek MT6985T | ||
| MediaTek MT6990 | ||
| Mediatek MT8167 | ||
| MediaTek MT8167S Firmware | ||
| MediaTek MT8168 | ||
| MediaTek MT8173 | ||
| MediaTek MT8175 Firmware | ||
| MediaTek MT8185 | ||
| MediaTek MT8188 | ||
| MediaTek MT8195Z | ||
| MediaTek MT8321 | ||
| MediaTek MT8362A Firmware | ||
| MediaTek MT8365 Firmware | ||
| MediaTek MT8385 Firmware | ||
| MediaTek MT8395 | ||
| MediaTek MT8666 | ||
| MediaTek MT8673 | ||
| MediaTek MT8675 | ||
| MediaTek MT8765 | ||
| MediaTek MT8766Z | ||
| MediaTek MT8768 | ||
| MediaTek MT8781 WiFi | ||
| MediaTek MT8786 | ||
| MediaTek MT8788 Firmware | ||
| MediaTek MT8789 | ||
| MediaTek MT8791 WiFi | ||
| MediaTek MT8791T | ||
| MediaTek MT8797 |
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Frequently Asked Questions
What is CVE-2023-20821?
CVE-2023-20821 is a vulnerability in nvram that allows for a possible out of bounds write due to a missing bounds check, potentially leading to local escalation of privilege.
How severe is CVE-2023-20821?
CVE-2023-20821 has a severity rating of 6.7 out of 10, which is considered medium severity.
What software is affected by CVE-2023-20821?
The affected software includes Linuxfoundation Yocto 2.6, Rdkcentral Rdk-b 2022q3, Google Android 11.0, Google Android 12.0, Google Android 13.0, Openwrt Openwrt 19.07.0, and Openwrt Openwrt 21.02.0.
Is user interaction required to exploit CVE-2023-20821?
No, user interaction is not needed for exploitation of CVE-2023-20821.
How can CVE-2023-20821 be patched?
To patch CVE-2023-20821, apply the provided Patch ID: ALPS07937113 or Issue ID: ALPS07937113.
- agent/type
- agent/references
- agent/weakness
- agent/severity
- agent/description
- agent/first-publish-date
- agent/event
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/source
- agent/author
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-index
- agent/softwarecombine
- agent/tags
- vendor/linuxfoundation
- canonical/yocto project
- version/yocto project/2.6
- vendor/rdkcentral
- canonical/rdk central rdkb
- version/rdk central rdkb/2022q3
- vendor/google
- canonical/android
- version/android/11.0
- version/android/12.0
- version/android/13.0
- vendor/openwrt
- canonical/open edx
- version/open edx/19.07.0
- version/open edx/21.02.0
- vendor/mediatek
- canonical/mediatek mt2713
- canonical/mediatek mt2735
- canonical/mediatek mt6833
- canonical/mediatek mt6835
- canonical/mediatek mt6853
- canonical/mediatek mt6855
- canonical/mediatek mt6873
- canonical/mediatek mt6875t
- canonical/mediatek mt6877
- canonical/mediatek mt6879
- canonical/mediatek mt6880
- canonical/mediatek mt6883
- canonical/mediatek mt6885
- canonical/mediatek mt6886
- canonical/mediatek mt6889
- canonical/mediatek mt6890
- canonical/mediatek mt6891
- canonical/mediatek mt6893
- canonical/mediatek mt6895
- canonical/mediatek mt6980d
- canonical/mediatek mt6983
- canonical/mediatek mt6985t
- canonical/mediatek mt6990
- canonical/mediatek mt8167
- canonical/mediatek mt8167s firmware
- canonical/mediatek mt8168
- canonical/mediatek mt8173
- canonical/mediatek mt8175 firmware
- canonical/mediatek mt8185
- canonical/mediatek mt8188
- canonical/mediatek mt8195z
- canonical/mediatek mt8321
- canonical/mediatek mt8362a firmware
- canonical/mediatek mt8365 firmware
- canonical/mediatek mt8385 firmware
- canonical/mediatek mt8395
- canonical/mediatek mt8666
- canonical/mediatek mt8673
- canonical/mediatek mt8675
- canonical/mediatek mt8765
- canonical/mediatek mt8766z
- canonical/mediatek mt8768
- canonical/mediatek mt8781 wifi
- canonical/mediatek mt8786
- canonical/mediatek mt8788 firmware
- canonical/mediatek mt8789
- canonical/mediatek mt8791 wifi
- canonical/mediatek mt8791t
- canonical/mediatek mt8797