Path traversal in tar - CVE-2021-37712
Published: November 17, 2021
Vulnerability identifier: #VU58203
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-37712
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: npm Inc.
Affected software:
tar
tar
Detailed vulnerability description
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when extracting tar files that contained two directories and a symlink
with names containing unicode values that normalized to the same value. A remote attacker can create a specially crafted archive that, when extracted, can overwrite arbitrary files on the system.
How to mitigate CVE-2021-37712
Install update from vendor's website.