CVE-2022-39343
CVSS v3
7.8
HIGH
Score EPSS
1.1 %
probabilité d’exploitation
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
Description
Azure RTOS FileX is a FAT-compatible file system that’s fully integrated with Azure RTOS ThreadX. In versions before 6.2.0, 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. This issue has been patched in version 6.2.0. A workaround to fix line 218 in fx_fault_tolerant_apply_logs.c is documented in the GHSA.
Détails techniques
- Publiée le
- 2022-11-08
Questions fréquentes
Qu’est-ce que CVE-2022-39343 ?
Azure RTOS FileX is a FAT-compatible file system that’s fully integrated with Azure RTOS ThreadX. In versions before 6.2.0, 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. This issue has been patched in version 6.2.0. A workaround to fix line 218 in fx_fault_tolerant_apply_logs.c is documented in the GHSA.
CVE-2022-39343 est-elle activement exploitée ?
Aucune exploitation active de CVE-2022-39343 n’est confirmée. Le score EPSS est de 1.1 %, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2022-39343 ?
CVE-2022-39343 a un score de base CVSS v3 de 7.8 (gravité HIGH).
CVE-2022-39343 touche-t-elle votre environnement ?
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Autres vulnérabilités 2022 à trier
Classées par probabilité d’exploitation (EPSS).