CVE-2021-43305

Katalog CVE

CVSS 8.8 · High EPSS 1,7%

Kerentanan Heap-based Buffer Overflow pada clickhouse, debian linux. Skor CVSS 3.1 8.8 (High) menurut NVD.

Deskripsi (NVD)

Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopy<copy_amount>(op, ip, copy_end), don’t exceed the destination buffer’s limits. This issue is very similar to CVE-2021-43304, but the vulnerable copy operation is in a different wildCopy call.

Rincian

Terbit di NVD

14 Maret 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-122: Heap-based Buffer Overflow
CWE-787: Out-of-bounds Write

EPSS (30 hari)

1,7% peluang dieksploitasi; lebih tinggi dari 76,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms exploit · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html mailing list · advisory pihak ketiga