5317 : IRIX fsr_xfs Arbitrary File Overwrite
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Timeline

Disclosure Date
2002-05-08

Description

IRIX contains a flaw related to the XFS Filesystem Reorganizer that may allow a malicious user to overwrite sensitive system files and gain root access. No further details have been provided.

Classification

Location: Local Access Required
Attack Type: Attack Type Unknown
Impact: Loss of Integrity
Exploit: Exploit Unknown

Solution

Upgrade to version 6.5.11 or higher, as it has been reported to fix this vulnerability. It is also possible to correct the flaw by implementing the following workaround: change root's crontab to run fsr_xfs with the -f
option and point at a directory that normal users can't write to, such as
/var/adm.

To set up this workaround, follow these steps:

1) Become the superuser

$ su -

2) Use vi or your favorite text editor to edit the file
/var/spool/cron/crontabs/root

# vi /var/spool/cron/crontabs/root

3) Look for a line that looks like this:

0 3 * * 0 if test -x /usr/etc/fsr; then (cd
/usr/tmp; /usr/etc/fsr) fi

4) Change it to this:

0 3 * * 0 if test -x /usr/etc/fsr; then (cd
/usr/tmp; /usr/etc/fsr -f /var/adm/.fsrlast) fi

5) Save the file and exit from the editor. crond will automatically detect
the changes to the file, so it is not necessary to stop and restart crond.

Products

SGI
IRIX
6.5
6.5.1
6.5.2
6.5.3
6.5.4
6.5.5
6.5.6
6.5.7
6.5.8
6.5.9
6.5.10

References

Credit

  • John Vanderpool - vandernssdca.gsfc.nasa.gov -

CVSSv2 Score

CVSSv2 Base Score = 7.2
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

Access_vector_0 Access_complexity_2 Authentication_2 Confidentiality_impact_2 Integrity_impact_2 Availability_impact_2

Comments

No Comments.

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