Process memory corruption via unbounded formatted write
Published Aug 27, 2024 · Updated Aug 28, 2024
Stack-based buffer overflow in Tenda O1 1.0.0.7(10648) allows remote authenticated users to corrupt process memory via funcpara1. The formSetCfm handler passes the POST-controlled value to save_list_data, where sprintf writes it into the fixed 64-byte v10 stack array without a length bound. Low-privileged management access is sufficient; the published proof of concept demonstrates the overwrite trigger but not reliable code execution.
Summary
What happened
Stack-based buffer overflow in Tenda O1 1.0.0.7(10648) allows remote authenticated users to corrupt process memory via funcpara1. The formSetCfm handler passes the POST-controlled value to save_list_data, where sprintf writes it into the fixed 64-byte v10 stack array without a length bound. Low-privileged management access is sufficient; the published proof of concept demonstrates the overwrite trigger but not reliable code execution.
The record
- CVE
- CVE-2024-8226
- Published
- Aug 27, 2024
- Updated
- Aug 28, 2024
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- O1 Firmware
- Classifications
- CWE-121, CWE-787, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 27, 2024CVE publishedPublication date reported by the CVE source.
- Aug 28, 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?
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- Affected versionversion=1.0.0.7\(10648\)
What conditions does exploitation require?
What is affected?
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
- formSetCfm oversized funcpara1 POST proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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