Use After Free in Amazon Freertos\+fat
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 class: Use-After-Free
EPSS: 0.009 (56.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Amazon Freertos\+fat — versions 160919a
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2019-18178?
- CVE-2019-18178 is a high-severity vulnerability in Amazon Freertos\+fat, classified under Use After Free. CVSS score: 7.5/10. Published 2019-11-04.
- How severe is CVE-2019-18178?
- High severity. CVSS v3 base score is 7.5 out of 10.