Solution
Please Install the Updated Packages.
Insight
The gfs2-utils package provides the user-space tools necessary to mount, create, maintain, and test GFS2 file systems.
Multiple insecure temporary file use flaws were discovered in GFS2 user level utilities. A local attacker could use these flaws to overwrite an arbitrary file writable by a victim running those utilities (typically root) with the output of the utilities via a symbolic link attack.
(CVE-2008-6552)
This update also fixes the following bugs:
* gfs2_fsck now properly detects and repairs problems with sequence numbers on GFS2 file systems.
* GFS2 user utilities now use the file system UUID.
* gfs2_grow now properly updates the file system size during operation.
* gfs2_fsck now returns the proper exit codes.
* gfs2_convert now properly frees blocks when removing free blocks up to height 2.
* the gfs2_fsck manual page has been renamed to fsck.gfs2 to match current standards.
* the 'gfs2_tool df' command now provides human-readable output.
* mounting GFS2 file systems with the noatime or noquota option now works properly.
* new capabilities have been added to the gfs2_edit tool to help in testing and debugging GFS and GFS2 issues.
* the 'gfs2_tool df' command no longer segfaults on file systems with a block size other than 4k.
* the gfs2_grow manual page no longer references the '-r' option, which has been removed.
* the 'gfs2_tool unfreeze' command no longer hangs during use.
* gfs2_convert no longer corrupts file systems when converting from GFS to GFS2.
* gfs2_fsck no longer segfaults when encountering a block which is listed as both a data and stuffed directory inode.
* gfs2_fsck can now fix file systems even if the journal is already locked for use.
* a GFS2 file system's metadata is now properly copied with 'gfs2_edit savemeta' and 'gfs2_edit restoremeta'.
* the gfs2_edit savemeta function now properly saves blocks of type 2.
* 'gfs2_convert -vy' now works properly on the PowerPC architecture.
* when mounting a GFS2 file system as '/', mount_gfs2 no longer fails after being unable to find the file system in '/proc/mounts'.
* gfs2_fsck no longer segfaults when fixing 'EA leaf block type' problems.
All gfs2-utils users should upgrade to this updated package, which resolves these issues.
Affected
gfs2-utils on CentOS 5
References
Updated on 2015-03-25
Severity
Classification
-
CVE CVE-2008-6552 -
CVSS Base Score: 6.9
AV:L/AC:M/Au:N/C:C/I:C/A:C
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