#VU58204 Path traversal in tar - CVE-2021-37713
Published: November 17, 2021
Vulnerability identifier: #VU58204
Vulnerability risk: Medium
CVSSv4.0: 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-2021-37713
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 insufficient logic on Windows systems when extracting tar files that contained a path that
was not an absolute path, but specified a drive letter different from
the extraction target, such as C:some\path. If the drive letter does not match the extraction target, for example D:\extraction\dir, then the result of path.resolve(extractionDirectory, entryPath) would resolve against the current working directory on the C: drive, rather than the extraction target directory.
Remediation
Install update from vendor's website.