Heap corruption via unchecked path terminator index
Published May 28, 2024 · Updated Feb 13, 2025
Out-of-bounds write in AutomationDirect P3-550E firmware 1.2.10.9 allows remote attackers to corrupt heap memory via UDP packets. The FileSystem API handler for IMM 0x0F0E uses an attacker-controlled path length as an array index when writing a terminating null byte at offset 0xb6aa4, without validating that the index remains inside the heap packet buffer. The unauthenticated Programming Software Connection service listens on UDP port 9999, so network-reachable attackers can corrupt adjacent heap data and interrupt PLC operation.
Summary
What happened
Out-of-bounds write in AutomationDirect P3-550E firmware 1.2.10.9 allows remote attackers to corrupt heap memory via UDP packets. The FileSystem API handler for IMM 0x0F0E uses an attacker-controlled path length as an array index when writing a terminating null byte at offset 0xb6aa4, without validating that the index remains inside the heap packet buffer. The unauthenticated Programming Software Connection service listens on UDP port 9999, so network-reachable attackers can corrupt adjacent heap data and interrupt PLC operation.
The record
- CVE
- CVE-2024-24957
- Published
- May 28, 2024
- Updated
- Feb 13, 2025
- Vendor
- AutomationDirect
- Product
- P3-550E Firmware
- Classifications
- CWE-787, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 28, 2024CVE publishedPublication date reported by the CVE source.
- Feb 13, 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?
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- Affected versionversion=1.2.10.9
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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