Vulnerability · Published May 28, 2024 · Assigned by Microchip
CVE-2024-30212Microchip Harmony 3 Core library allows read and write access to RAM via a SCSI READ or WRITE command
High 7.0
In plain English
A high-severity integer overflow in MPLAB® Harmony 3 Core Module from Microchip. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
If a SCSI READ(10) command is initiated via USB using the largest LBA (0xFFFFFFFF) with it's default block size of 512 and a count of 1, the first 512 byte of the 0x80000000 memory area is returned to the user. If the block count is increased, the full RAM can be exposed. The same method works to write to this memory area. If RAM contains pointers, those can be - depending on the application - overwritten to return data from any other offset including Progam and Boot Flash.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microchip | MPLAB® Harmony 3 Core Module | 3.0.0 – before 3.13.4 |
Weakness: CWE-190 · Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N