System-level code execution via WLAN command injection
Published Sep 4, 2023 · Updated Oct 9, 2024
Command injection in MediaTek WLAN service on affected chipsets running OpenWRT 19.07 or 21.02 allows remote authenticated users to execute code. The service fails to validate an undisclosed input before using it in command execution; MediaTek has not published the affected function or input field. Exploitation requires existing System privileges but no user interaction, limiting reach to highly privileged remote users.
Summary
What happened
Command injection in MediaTek WLAN service on affected chipsets running OpenWRT 19.07 or 21.02 allows remote authenticated users to execute code. The service fails to validate an undisclosed input before using it in command execution; MediaTek has not published the affected function or input field. Exploitation requires existing System privileges but no user interaction, limiting reach to highly privileged remote users.
The record
- CVE
- CVE-2023-20820
- Published
- Sep 4, 2023
- Updated
- Oct 9, 2024
- Vendor
- MediaTek
- Product
- MT7990
- Classifications
- CWE-20, T1059
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Sep 4, 2023CVE publishedPublication date reported by the CVE source.
- Oct 9, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=openwrt_19.07
- Affected versionversion=openwrt_2102
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo