CVE-2021-46878

Katalog CVE

CVSS 7.8 · High EPSS 0,35%

Kerentanan Access of Resource Using Incompatible Type ('Type Confusion') pada treasuredata fluent bit. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

An issue was discovered in Treasure Data Fluent Bit 1.7.1, erroneous parsing in flb_pack_msgpack_to_json_format leads to type confusion bug that interprets whatever is on the stack as msgpack maps and arrays, leading to use-after-free. This can be used by an attacker to craft a specially craft file and trick the victim opening it using the affect software, triggering use-after-free and execute arbitrary code on the target system.

Rincian

Terbit di NVD

11 April 2023

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-843: Access of Resource Using Incompatible Type ('Type Confusion')

EPSS (30 hari)

0,35% peluang dieksploitasi; lebih tinggi dari 26,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27742 exploit · issue tracking · patch · advisory pihak ketiga
• https://github.com/fluent/fluent-bit/pull/3115 patch