CVE-2024-57392
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedBuffer Overflow vulnerability in Proftpd commit 4017eff8 allows a remote attacker to execute arbitrary code and can cause a Denial of Service (DoS) on the FTP service by sending a maliciously crafted message to the ProFTPD service port.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA buffer overflow vulnerability exists in ProFTPD (commit 4017eff8) where a remote attacker can send a maliciously crafted message to the FTP service port, triggering the overflow. This can lead to arbitrary code execution or denial of service on the affected FTP server.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify ProFTPD installationRun 'proftpd -v' or 'proftpd --version' to check if ProFTPD is installed and obtain the version number. On Linux, also check package manager with 'rpm -qa | grep proftpd' or 'dpkg -l | grep proftpd'.Affected if ProFTPD is installed and running on the system
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Confirm the running serviceCheck if the FTP daemon is actively listening. Run 'ps aux | grep proftpd' to verify the proftpd process is running, or 'netstat -tlnp | grep ftp' / 'ss -tlnp | grep ftp' to check for port 21 listening.Affected if ProFTPD is actively running and listening on FTP port(s)
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Determine ProFTPD versionCompare the installed version against the fix point. The vulnerability is in the code before commit 4017eff8. Check the ProFTPD source code version or git log if accessible, or check vendor/security advisories for version information about when 4017eff8 was merged.Affected if The installed ProFTPD version predates the fix for commit 4017eff8 or the exact version status is unknown
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Check FTP port accessibilityDetermine if the FTP service port (default 21) is exposed to untrusted networks. Review firewall rules with 'iptables -L' or 'ufw status', and check network accessible ports with 'nmap -p 21 <target>' from an external perspective.Affected if Port 21 is accessible from untrusted or external network locations
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Review logs for exploit indicatorsExamine ProFTPD logs (typically in /var/log/proftpd/ or /var/log/xferlog) for unusual patterns, connection errors, or crashes that may indicate exploitation attempts. Search for malformed commands or unexpected input.Affected if Logs show crashes, errors, or suspicious malformed commands around the time of potential attack
The environment is affected if ProFTPD is running and the installed version predates the fix for commit 4017eff8, or if the version cannot be definitively confirmed as patched.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate ProFTPD to the version containing the fix for commit 4017eff8, or apply the specific patch from that commit. Implement network-level filtering to limit FTP access to trusted sources as an interim control.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2024-57392 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-57392 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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