VULNERABILITY INTELLIGENCE

CVE-2022-1271

CVSS score8.8 HIGH
EPSS probability5.55%
CISA KEVNot currently listed
Published2022-08-31
Last modified2026-10-14
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • CWE-20: Improper Input Validation
  • CWE-179: Incorrect Behavior Order: Early Validation

Primary references