CVE-2022-3592: fedoraproject fedora UNIX Symbolic Link (Symlink) Following

Vulnerability summary

CVE-2022-3592 is a medium (CVSS 6.5) UNIX Symbolic Link (Symlink) Following vulnerability in fedoraproject fedora. EPSS estimates a 2.59% chance of exploitation in the next 30 days, higher than 85% of scored vulnerabilities.

Timeline

1. 12-01-2023
   PublishedVulnerability first disclosed.
2. 08-04-2025
   Last modifiedVulnerability information updated.

Description

A symlink following vulnerability was found in Samba, where a user can create a symbolic link that will make 'smbd' escape the configured share path. This flaw allows a remote user with access to the exported part of the file system under a share via SMB1 unix extensions or NFS to create symlinks to files outside the 'smbd' configured share path and gain access to another restricted server's filesystem.

• CWE-61UNIX Symbolic Link (Symlink) FollowingThe product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.
• CWE-59Improper Link Resolution Before File Access ('Link Following')The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.