3571e53040
patches for easier mirroring, to eliminate a special copy, to make www.freebsd.org/security a full copy of security.freebsd.org and be eventually be the same. For now files are just sitting there. The symlinks are missing. Discussed on: www (repository location) Discussed with: simon (so)
138 lines
5 KiB
Text
138 lines
5 KiB
Text
-----BEGIN PGP SIGNED MESSAGE-----
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Hash: SHA1
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=============================================================================
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FreeBSD-SA-05:06.iir Security Advisory
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The FreeBSD Project
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Topic: Incorrect permissions on /dev/iir
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Category: core
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Module: sys_dev
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Announced: 2005-05-06
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Credits: Christian S.J. Peron
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Andre Guibert de Bruet
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Affects: All FreeBSD 4.x releases since 4.6-RELEASE
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All FreeBSD 5.x releases prior to 5.4-RELEASE
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Corrected: 2005-05-06 02:33:46 UTC (RELENG_5, 5.4-STABLE)
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2005-05-06 02:34:18 UTC (RELENG_5_4, 5.4-RELEASE)
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2005-05-06 02:34:01 UTC (RELENG_5_3, 5.3-RELEASE-p11)
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2005-05-06 02:32:54 UTC (RELENG_4, 4.11-STABLE)
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2005-05-06 02:33:28 UTC (RELENG_4_11, 4.11-RELEASE-p5)
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2005-05-06 02:33:12 UTC (RELENG_4_10, 4.10-RELEASE-p10)
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CVE Name: CAN-2005-1399
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For general information regarding FreeBSD Security Advisories,
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including descriptions of the fields above, security branches, and the
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following sections, please visit
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<URL:http://www.freebsd.org/security/>.
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0. Revision History
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v1.0 2005-05-06 Initial release.
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v1.1 2005-05-07 Updated credits to include Andre Guibert de Bruet, who
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was inadvertantly omitted from the original advisory.
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I. Background
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The iir(4) driver provides support for the Intel Integrated RAID
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controllers and ICP Vortex RAID controllers.
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II. Problem Description
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The default permissions on the /dev/iir device node allow unprivileged
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local users to open the device and execute ioctl calls.
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III. Impact
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Unprivileged local users can send commands to the hardware supported by
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the iir(4) driver, allowing destruction of data and possible disclosure
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of data.
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IV. Workaround
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Systems without hardware supported by the iir(4) driver are not affected
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by this issue. On systems which are affected, as a workaround, the
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permissions on /dev/iir can be changed manually.
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As root, execute the following command:
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# chmod 0600 /dev/iir*
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On 5.x, the following commands are also needed to ensure that the
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correct permissions are used after rebooting.
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# echo 'perm iir* 0600' >> /etc/devfs.conf
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# echo 'devfs_enable="YES"' >> /etc/rc.conf
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If the administrator has created additional device nodes, or mounted
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additional instances of devfs(5) elsewhere in the file system name
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space, attention should be paid to ensure that either the iir device
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node is not visible in those name spaces, or is similarly protected.
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V. Solution
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Perform one of the following:
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1) Upgrade your vulnerable system to 4-STABLE or 5-STABLE, or to the
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RELENG_5_3, RELENG_4_11, or RELENG_4_10 security branch dated after
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the correction date.
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2) To patch your present system:
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The following patches have been verified to apply to FreeBSD 4.10,
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4.11, and 5.3 systems.
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a) Download the relevant patch from the location below, and verify the
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detached PGP signature using your PGP utility.
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# fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-05:06/iir.patch
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# fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-05:06/iir.patch.asc
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b) Apply the patch.
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# cd /usr/src
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# patch < /path/to/patch
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c) Recompile your kernel as described in
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<URL:http://www.freebsd.org/handbook/kernelconfig.html> and reboot the
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system.
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VI. Correction details
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The following list contains the revision numbers of each file that was
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corrected in FreeBSD.
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Branch Revision
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Path
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- -------------------------------------------------------------------------
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RELENG_4
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src/sys/dev/iir/iir_ctrl.c 1.2.2.5
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RELENG_4_11
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src/UPDATING 1.73.2.91.2.6
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src/sys/conf/newvers.sh 1.44.2.39.2.9
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src/sys/dev/iir/iir_ctrl.c 1.2.2.4.12.1
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RELENG_4_10
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src/UPDATING 1.73.2.90.2.11
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src/sys/conf/newvers.sh 1.44.2.34.2.12
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src/sys/dev/iir/iir_ctrl.c 1.2.2.4.10.1
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RELENG_5
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src/sys/dev/iir/iir_ctrl.c 1.15.2.2
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RELENG_5_4
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src/UPDATING 1.342.2.24.2.5
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src/sys/dev/iir/iir_ctrl.c 1.15.2.1.2.1
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RELENG_5_3
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src/UPDATING 1.342.2.13.2.14
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src/sys/conf/newvers.sh 1.62.2.15.2.16
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src/sys/dev/iir/iir_ctrl.c 1.15.4.1
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- -------------------------------------------------------------------------
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The latest revision of this advisory is available at
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ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:06.iir.asc
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