Advisories ยป MGASA-2021-0533

Updated busybox packages fix security vulnerability

Publication date: 02 Dec 2021
Modification date: 02 Dec 2021
Type: security
Affected Mageia releases : 8
CVE: CVE-2021-42376 , CVE-2021-42377 , CVE-2021-42378 , CVE-2021-42379 , CVE-2021-42380 , CVE-2021-42381 , CVE-2021-42382 , CVE-2021-42383 , CVE-2021-42384 , CVE-2021-42385 , CVE-2021-42386

Description

A NULL pointer dereference in Busybox's hush applet leads to denial of
service when processing a crafted shell command, due to missing validation
after a \x03 delimiter character. This may be used for DoS under very rare
conditions of filtered command input. (CVE-2021-42376)

An attacker-controlled pointer free in Busybox's hush applet leads to
denial of service and possible code execution when processing a crafted
shell command, due to the shell mishandling the &&& string. This may be
used for remote code execution under rare conditions of filtered command
input. (CVE-2021-42377)

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
getvar_i function. (CVE-2021-42378)

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
next_input_file function. (CVE-2021-42379)

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
clrvar function. (CVE-2021-42380)

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. (CVE-2021-42381)

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
getvar_s function. (CVE-2021-42382)

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
evaluate function. (CVE-2021-42383)

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
handle_special function. (CVE-2021-42384)

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
evaluate function. (CVE-2021-42385)

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
nvalloc function. (CVE-2021-42386)

References

SRPMS

8/core