Service crash via oversized PUT command
Published Jan 19, 2024 · Updated May 30, 2025
A buffer overflow in PCMan FTP Server 2.0.7 allows remote attackers to crash the service with an oversized FTP PUT command. The PUT handler accepts an excessively long command argument without enforcing its destination buffer boundary, so the server process terminates. The target must expose its FTP listener to the attacker; exploitation interrupts the server without reported data disclosure or modification.
Summary
What happened
A buffer overflow in PCMan FTP Server 2.0.7 allows remote attackers to crash the service with an oversized FTP PUT command. The PUT handler accepts an excessively long command argument without enforcing its destination buffer boundary, so the server process terminates. The target must expose its FTP listener to the attacker; exploitation interrupts the server without reported data disclosure or modification.
The record
- CVE
- CVE-2024-0731
- Published
- Jan 19, 2024
- Updated
- May 30, 2025
- Vendor
- PCMan
- Product
- PCMan FTP Server
- Classifications
- CWE-404, CWE-120, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 19, 2024CVE publishedPublication date reported by the CVE source.
- May 30, 2025Record 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=2.0.7
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
- PCMan 2.0.7 PUT denial-of-service 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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