First published: Tue Mar 02 2010(Updated: )
fusermount in FUSE before 2.7.5, and 2.8.x before 2.8.2, allows local users to unmount an arbitrary FUSE filesystem share via a symlink attack on a mountpoint.
Credit: cve@mitre.org
Affected Software | Affected Version | How to fix |
---|---|---|
Fuse | =2.4.2 | |
Fuse | =2.6.0 | |
Fuse | =2.4.1 | |
Fuse | =2.2 | |
Fuse | =2.6.5 | |
Fuse | =2.7.0 | |
Fuse | =2.7.4 | |
Fuse | =2.3.0 | |
Fuse | =2.4.0 | |
Fuse | =2.6.3 | |
Fuse | =2.5.3 | |
Fuse | =2.3-pre | |
Fuse | =2.0-pre1 | |
Fuse | =2.2.1 | |
Fuse | =2.5.1 | |
Fuse | =2.7.1 | |
Fuse | =2.7.2 | |
Fuse | =2.1 | |
Fuse | =2.5.2 | |
Fuse | =1.9 | |
Fuse | =2.5.0 | |
Fuse | =2.6.1 | |
Fuse | =2.0-pre0 | |
Fuse | =2.7.3 | |
Fuse | =2.3-rc1 |
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CVE-2010-0789 has been assigned a medium severity due to the potential for local users to unmount arbitrary FUSE filesystem shares.
To fix CVE-2010-0789, upgrade to FUSE version 2.7.5 or later, or 2.8.2 or later, as these versions contain the necessary security fixes.
CVE-2010-0789 affects local users on systems running vulnerable versions of FUSE prior to 2.7.5 and 2.8.2.
The attack involves a symlink manipulation to unmount a FUSE filesystem by exploiting the file permission handling in fusermount.
A possible workaround for CVE-2010-0789 is to restrict access permissions for local users to sensitive filesystems until the software is patched.