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HIGH

gzip: arbitrary-file-write vulnerability

Published Aug 31, 2022

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.

Affected products

Remediation

Red Hat statement

This bug was introduced in gzip-1.3.10 and is relatively hard to exploit. Red Hat Enterprise Linux 6 was affected but Out of Support Cycle because gzip was not listed in Red Hat Enterprise Linux 6 ELS Inclusion List. https://access.redhat.com/articles/4997301

Red Hat mitigation

Red Hat has investigated whether possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

Weaknesses (3)

CWE-179

CWE-20

Improper Input Validation

CWE-73

References (12)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Aug 31, 2022
Updated Jun 9, 2025
Reserved Apr 7, 2022
Link CVE-2022-1271
CISA Vulnrichment
Updated Jun 9, 2025
NVD
Status Modified
Modified Jun 17, 2026
Link CVE-2022-1271
Red Hat
Severity Important
Public date Apr 7, 2022
Links CVE-2022-1271 - Bugzilla
ENISA EUVD
Assigner redhat
Published Aug 31, 2022
Updated Jun 9, 2025
Exploited since n/a
Link EUVD-2022-24604
EUVD-2022-24604