Unauthenticated service disruption via unchecked directory length
Published May 28, 2024 · Updated Feb 13, 2025
Out-of-bounds write in AutomationDirect P3-550E 1.2.10.9 allows remote attackers to corrupt heap memory via crafted UDP packets. The IMM 0x0F16 FileSystem API handler uses an attacker-controlled directory length as an array index when appending a null terminator, without validating it against the directory buffer. The UDP port 9999 service accepts the request without authentication, enabling an out-of-bounds null-byte write that can impair controller availability.
Summary
What happened
Out-of-bounds write in AutomationDirect P3-550E 1.2.10.9 allows remote attackers to corrupt heap memory via crafted UDP packets. The IMM 0x0F16 FileSystem API handler uses an attacker-controlled directory length as an array index when appending a null terminator, without validating it against the directory buffer. The UDP port 9999 service accepts the request without authentication, enabling an out-of-bounds null-byte write that can impair controller availability.
The record
- CVE
- CVE-2024-24959
- Published
- May 28, 2024
- Updated
- Feb 13, 2025
- Vendor
- AutomationDirect
- Product
- P3-550E Firmware
- Classifications
- CWE-787, T1499.004
- 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
CVSS describes severity. EPSS estimates exploitation probability.
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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