CVE-2022-1271

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.

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

5.5% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-25)

CWEs

CWE-20, CWE-179

Published

2022-08-31

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• gnu:gzip
• redhat:jboss_data_grid
• tukaani:xz

References

• https://access.redhat.com/security/cve/CVE-2022-1271
• https://bugzilla.redhat.com/show_bug.cgi?id=2073310
• https://git.tukaani.org/?p=xz.git%3Ba=commit%3Bh=69d1b3fc29677af8ade8dc15dba83f0589cb63d6
• https://lists.gnu.org/r/bug-gzip/2022-04/msg00011.html
• https://security-tracker.debian.org/tracker/CVE-2022-1271

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