Memory disclosure and corruption via block-range overflow
Published May 28, 2024 · Updated Feb 13, 2025
Integer overflow in Microchip MPLAB Harmony 3 Core Module before 3.13.4 allows physically proximate attackers to read or write memory. DRV_MEMORY_SetupXfer adds the attacker-controlled starting block and count as a 32-bit value, allowing the range check to wrap and accept an out-of-range transfer. Direct USB access to affected firmware permits RAM disclosure or corruption, including pointer changes that expose program or boot flash.
Summary
What happened
Integer overflow in Microchip MPLAB Harmony 3 Core Module before 3.13.4 allows physically proximate attackers to read or write memory. DRV_MEMORY_SetupXfer adds the attacker-controlled starting block and count as a 32-bit value, allowing the range check to wrap and accept an out-of-range transfer. Direct USB access to affected firmware permits RAM disclosure or corruption, including pointer changes that expose program or boot flash.
The record
- CVE
- CVE-2024-30212
- Published
- May 28, 2024
- Updated
- Feb 13, 2025
- Vendor
- Microchip Technology
- Product
- MPLAB Harmony
- Classifications
- CWE-190, CAPEC-92
- Attack vector
- physical
- 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.0.0 <3.13.4
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
- BlackLeakproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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