Authenticated service interruption via speed_dir buffer overflow
Published Dec 20, 2022 · Updated Apr 16, 2025
Buffer overflow in the httpd module of Tenda F1203 2.0.1.6 allows remote authenticated users to interrupt service via an HTTP request. The /goform/SetSpeedWan handler processes an oversized speed_dir value without enforcing the destination buffer's capacity, causing memory corruption. The published proof of concept includes an administrator session cookie and demonstrates denial of service, but it does not establish code execution or identify whether the device hangs, crashes, or reboots.
Summary
What happened
Buffer overflow in the httpd module of Tenda F1203 2.0.1.6 allows remote authenticated users to interrupt service via an HTTP request. The /goform/SetSpeedWan handler processes an oversized speed_dir value without enforcing the destination buffer's capacity, causing memory corruption. The published proof of concept includes an administrator session cookie and demonstrates denial of service, but it does not establish code execution or identify whether the device hangs, crashes, or reboots.
The record
- CVE
- CVE-2022-46534
- Published
- Dec 20, 2022
- Updated
- Apr 16, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-120, T1499
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 20, 2022CVE publishedPublication date reported by the CVE source.
- Apr 16, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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.
Weakness, pattern, technique
Public exploit references
- Tenda F1203 SetSpeedWan denial-of-service proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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