Vulnerability Details : CVE-2019-18178
Real Time Engineers FreeRTOS+FAT 160919a has a use after free. The function FF_Close() is defined in ff_file.c. The file handler pxFile is freed by ffconfigFREE, which (by default) is a macro definition of vPortFree(), but it is reused to flush modified file content from the cache to disk by the function FF_FlushCache().
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2019-18178
Probability of exploitation activity in the next 30 days: 0.10%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 41 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2019-18178
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2019-18178
-
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-18178
-
https://sourceforge.net/p/freertos/bugs/199/
FreeRTOS Real Time Kernel (RTOS) / Bugs / #199 Use after free bug of FreeRTOS+FATFSExploit;Third Party Advisory
Products affected by CVE-2019-18178
- cpe:2.3:o:amazon:freertos\+fat:160919a:*:*:*:*:*:*:*