1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200611-17 / fvwm |
| Release Date | November 23, 2006 |
| Latest Revision | November 23, 2006: 01 |
| Impact | normal |
| Exploitable | local |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| x11-wm/fvwm | < 2.5.18-r1 | >= 2.5.18-r1 | All supported architectures |
Related bugreports: #155078
A flaw in fvwm-menu-directory may permit a local attacker to execute arbitrary commands with the privileges of another user.
fvwm is a highly configurable virtual window manager for X11 desktops. fvwm-menu-directory allows fvwm users to browse directories from within fvwm.
Tavis Ormandy of the Gentoo Linux Security Audit Team discovered that fvwm-menu-directory does not sufficiently sanitise directory names prior to generating menus.
A local attacker who can convince an fvwm-menu-directory user to browse a directory they control could cause fvwm commands to be executed with the privileges of the fvwm user. Fvwm commands can be used to execute arbitrary shell commands.
There is no known workaround at this time.
All fvwm users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=x11-wm/fvwm-2.5.18-r1" |