#VU58202 Path traversal in tar - CVE-2021-37701
Published: November 17, 2021
Vulnerability identifier: #VU58202
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-37701
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
tar
tar
Software vendor:
npm Inc.
npm Inc.
Description
The vulnerability allows a remote attacker to overwrite arbitrary files on the system.
The vulnerability exists due to input validation error when extracting tar files that contained both a directory and a symlink with
the same name as the directory, where the symlink and directory names in
the archive entry used backslashes as a path separator on posix
systems. A remote attacker can create a specially crafted archive and overwrite arbitrary files on the system.
Remediation
Install update from vendor's website.