Code execution via oversized FTP directory response
Published Jan 28, 2021 · Updated Aug 4, 2024
Stack overflow in Accfly Wireless Security IR Camera System 720P 3.10.73 through 4.15.77 allows remote attackers to execute code via FTP. CFtpProtocol::FtpLogin passes a 256-byte stack array to FtpPwd, which copies up to 1,500 bytes of an FTP working-directory response into it. Exploitation requires DNS control or redirection of the camera’s FTP connection; the published PoC redirects execution to a device function and crashes the Alloca process.
Summary
What happened
Stack overflow in Accfly Wireless Security IR Camera System 720P 3.10.73 through 4.15.77 allows remote attackers to execute code via FTP. CFtpProtocol::FtpLogin passes a 256-byte stack array to FtpPwd, which copies up to 1,500 bytes of an FTP working-directory response into it. Exploitation requires DNS control or redirection of the camera’s FTP connection; the published PoC redirects execution to a device function and crashes the Alloca process.
The record
- CVE
- CVE-2020-25785
- Published
- Jan 28, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 28, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record 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.
Public exploit references
- runFtp.py crash PoCproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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