acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions acl_get_file(), acl_set_file(), acl_extended_file(), and acl_delete_def_file() that allows local attackers to escalate privileges by replacing any pathname component with a symbolic link. Attackers who control any component of a pathname processed by a privileged caller can redirect ACL read or write operations to arbitrary files or directories, enabling unauthorized manipulation of access control lists and local privilege escalation.
| Vendor | Product | Versions |
|---|---|---|
| red hat | acl | 0 |
Updated description with detailed technical information, added affected version 2.4.0, and marked exploit availability and active exploitation as true.
Updated severity to CRITICAL, changed exploit availability to false, and provided a new description detailing the vulnerability.
Initial creation
