Unauthenticated code execution via unchecked pin copy
Published Aug 8, 2023 · Updated Oct 10, 2024
Stack-based buffer overflow in TOTOLINK T10 V2 Firmware 5.9c.5061_B20200511 allows remote attackers to execute code via MQTT. setWiFiWpsConfig copies an attacker-controlled pin value into a stack buffer with strncpy without checking its length when wscMode and wscPinMode equal 1. Network reachability to the router's MQTT service is sufficient; overwriting the return address executes attacker-supplied code.
Summary
What happened
Stack-based buffer overflow in TOTOLINK T10 V2 Firmware 5.9c.5061_B20200511 allows remote attackers to execute code via MQTT. setWiFiWpsConfig copies an attacker-controlled pin value into a stack buffer with strncpy without checking its length when wscMode and wscPinMode equal 1. Network reachability to the router's MQTT service is sufficient; overwriting the return address executes attacker-supplied code.
The record
- CVE
- CVE-2023-40041
- Published
- Aug 8, 2023
- Updated
- Oct 10, 2024
- Vendor
- TOTOLINK
- Product
- TOTOLINK T10 V2 Firmware
- Classifications
- CWE-787, T1210
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 8, 2023CVE publishedPublication date reported by the CVE source.
- Oct 10, 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=v2 5.9c.5061_b20200511
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
- TOTOLINK T10 V2 setWiFiWpsConfig MQTT proof of conceptproof of concept · demonstrated
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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