#VU70623 Link following in Oras - CVE-2021-21272
Published: January 3, 2023
Vulnerability identifier: #VU70623
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-21272
CWE-ID: CWE-59
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Oras
Oras
Software vendor:
Deislabs
Deislabs
Description
The vulnerability allows a remote attacker to overwrite files on the system.
The vulnerability exists due to insecure hardlink following when extracting files from an archive. A remote attacker can trick the victim into downloading a gzipped tarballs that will be automatically extracted to the user-specified directory where the tarball can have symbolic links and hard links.
Remediation
Install updates from vendor's website.