CVE-2022-1271

Description

An arbitrary file write vulnerability was found in GNU gzip's zgrep utility. When zgrep is applied on the attacker's chosen file name (for example, a crafted file name), this can overwrite an attacker's content to an arbitrary attacker-selected file. This flaw occurs due to insufficient validation when processing filenames with two or more newlines where selected content and the target file names are embedded in crafted multi-line file names. This flaw allows a remote, low privileged attacker to force zgrep to write arbitrary files on the system.

How to fix CVE-2022-1271

To remediate CVE-2022-1271, upgrade the affected package to a fixed version below.

—upgrade to 1.12-r0 or later
—upgrade to 5.2.5-r1 or later
—upgrade to 1.9-3+deb10u1 or later
—upgrade to 1.10-4+deb11u1 or later
—upgrade to 1.6-5+deb9u1 or later
—upgrade to 5.2.4-1+deb10u1 or later
—upgrade to 5.2.2-1.2+deb9u1 or later
—upgrade to 5.2.5-2.1~deb11u1 or later

Is CVE-2022-1271 being exploited?

Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.

Affected packages (8)

from 0, < 1.12-r0
from 0, < 5.2.5-r1
from 0, < 1.9-3+deb10u1
from 0, < 1.10-4+deb11u1
from 0, < 1.6-5+deb9u1
from 0, < 5.2.4-1+deb10u1
from 0, < 5.2.2-1.2+deb9u1
from 0, < 5.2.5-2.1~deb11u1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	HIGH8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H