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TITLE:
FreeBSD Insecure iir Driver Permissions

SECUNIA ADVISORY ID:
SA15260

VERIFY ADVISORY:
http://secunia.com/advisories/15260/

CRITICAL:
Less critical

IMPACT:
Manipulation of data, Exposure of sensitive information

WHERE:
Local system

OPERATING SYSTEM:
FreeBSD 5.x
http://secunia.com/product/1132/
FreeBSD 4.x
http://secunia.com/product/139/

DESCRIPTION:
Christian S.J. Peron has reported a security issue in FreeBSD, which
can be exploited by malicious, local users to gain knowledge of
sensitive information or corrupt data.

The problem is caused due to insecure default permissions on the iir
driver (/dev/iir) allowing any user on the system to open the device
and send arbitrary commands to the hardware supported by the iir
driver.

Successful exploitation may allow disclosure or destruction of data.

SOLUTION:
Update FreeBSD or apply patch.

Fixed versions:
2005-05-06 02:33:46 UTC (RELENG_5, 5.4-STABLE)
2005-05-06 02:34:18 UTC (RELENG_5_4, 5.4-RELEASE)
2005-05-06 02:34:01 UTC (RELENG_5_3, 5.3-RELEASE-p11)
2005-05-06 02:32:54 UTC (RELENG_4, 4.11-STABLE)
2005-05-06 02:33:28 UTC (RELENG_4_11, 4.11-RELEASE-p5)
2005-05-06 02:33:12 UTC (RELENG_4_10, 4.10-RELEASE-p10)

Patch for FreeBSD 4.10, 4.11, and 5.3:
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-05:06/iir.patch
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-05:06/iir.patch.asc

PROVIDED AND/OR DISCOVERED BY:
Christian S.J. Peron

ORIGINAL ADVISORY:
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:06.iir.asc

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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