PT-2022-24913 · Microsoft · Azure Rtos Filex
Published
2022-11-08
·
Updated
2022-11-10
·
CVE-2022-39343
CVSS v3.1
5.6
Medium
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
Name of the Vulnerable Software and Affected Versions
Azure RTOS FileX versions prior to 6.2.0
Description
The Fault Tolerant feature of Azure RTOS FileX includes integer under and overflows which may be exploited to achieve buffer overflow and modify memory contents. When a valid log file with correct ID and checksum is detected by the
fx fault tolerant enable function, an attempt to recover the previous failed write operation is taken by call of fx fault tolerant apply logs. This function iterates through the log entries and performs required recovery operations. When properly crafted, a log including entries of type FX FAULT TOLERANT DIR LOG TYPE may be utilized to introduce unexpected behavior.Recommendations
For Azure RTOS FileX versions prior to 6.2.0, update to version 6.2.0 to resolve the issue.
As a temporary workaround, consider fixing line 218 in fx fault tolerant apply logs.c as documented in the GHSA.
Exploit
Fix
Integer Underflow
Integer Overflow
Buffer Overflow
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Azure Rtos Filex