Service interruption via unchecked SSID copy
Published Aug 25, 2023 · Updated Oct 2, 2024
Stack buffer overflow in Tenda AX3 Firmware 16.03.12.11 allows remote attackers to interrupt the router's HTTP service via an SSID value. /bin/httpd's form_fast_setting_wifi_set copies the HTTP ssid parameter into a stack buffer without checking its length. The endpoint accepts the request without authentication; published evidence supports service interruption, not code execution.
Summary
What happened
Stack buffer overflow in Tenda AX3 Firmware 16.03.12.11 allows remote attackers to interrupt the router's HTTP service via an SSID value. /bin/httpd's form_fast_setting_wifi_set copies the HTTP ssid parameter into a stack buffer without checking its length. The endpoint accepts the request without authentication; published evidence supports service interruption, not code execution.
The record
- CVE
- CVE-2023-40915
- Published
- Aug 25, 2023
- Updated
- Oct 2, 2024
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- AX3 Firmware
- Classifications
- CWE-787, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 25, 2023CVE publishedPublication date reported by the CVE source.
- Oct 2, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=16.03.12.11
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
- form_fast_setting_wifi_set denial-of-service proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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