CVE-2022-39343

Katalog CVE

CVSS 7.8 · High EPSS 0,89%

Kerentanan Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') pada microsoft azure rtos filex. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

8 November 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.8 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-190: Integer Overflow or Wraparound
CWE-191: Integer Underflow (Wrap or Wraparound)

EPSS (30 hari)

0,89% peluang dieksploitasi; lebih tinggi dari 58,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/azure-rtos/filex/blob/master/common/src/fx_fault_tolerant_apply_logs.c#L218 patch · advisory pihak ketiga
• https://github.com/azure-rtos/filex/security/advisories/GHSA-8jqf-wjhq-4w9f exploit · mitigasi · advisory pihak ketiga