CVE-2021-42381

HighCVSS 7.2/10Last modified Jun 17, 2026

Description

A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the hash_init function

Metrics

CVSS 3.1 7.2/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

No affected versions have been published.

Timeline

Published: Nov 15, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-423827.2A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the CVE-2021-423837.2A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the CVE-2021-423847.2A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the CVE-2021-423857.2A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the CVE-2021-423867.2A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the CVE-2021-423878.1Heap out-of-bounds read in Clickhouse's LZ4 compression codec when parsing a malicious query. As part of the LZ4::decompressImpl() loop, a 1 CVE-2021-423888.1Heap out-of-bounds read in Clickhouse's LZ4 compression codec when parsing a malicious query. As part of the LZ4::decompressImpl() loop, a 1 CVE-2021-423896.5Divide-by-zero in Clickhouse's Delta compression codec when parsing a malicious query. The first byte of the compressed buffer is used in a CVE-2021-42397.5The Noise protocol implementation suffers from weakened cryptographic security after encrypting 2^64 messages, and a potential denial of ser CVE-2021-423906.5Divide-by-zero in Clickhouse's DeltaDouble compression codec when parsing a malicious query. The first byte of the compressed buffer is used CVE-2021-423916.5Divide-by-zero in Clickhouse's Gorilla compression codec when parsing a malicious query. The first byte of the compressed buffer is used in CVE-2021-423929.8The org.h2.util.JdbcUtils.getConnection method of the H2 database takes as parameters the class name of the driver and URL of the database.