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Diffstat (limited to 'share/security/advisories/FreeBSD-SA-05:03.amd64.asc')
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diff --git a/share/security/advisories/FreeBSD-SA-05:03.amd64.asc b/share/security/advisories/FreeBSD-SA-05:03.amd64.asc deleted file mode 100644 index 2b71af52bf..0000000000 --- a/share/security/advisories/FreeBSD-SA-05:03.amd64.asc +++ /dev/null @@ -1,105 +0,0 @@ ------BEGIN PGP SIGNED MESSAGE----- -Hash: SHA1 - -============================================================================= -FreeBSD-SA-05:03.amd64 Security Advisory - The FreeBSD Project - -Topic: unprivileged hardware access on amd64 - -Category: core -Module: sys_amd64 -Announced: 2005-04-06 -Credits: Jari Kirma -Affects: All FreeBSD/amd64 5.x releases prior to 5.4-RELEASE -Corrected: 2005-04-06 01:05:51 UTC (RELENG_5, 5.4-STABLE) - 2005-04-06 01:06:15 UTC (RELENG_5_4, 5.4-RELEASE) - 2005-04-06 01:06:44 UTC (RELENG_5_3, 5.3-RELEASE-p8) -CVE Name: CAN-2005-1036 - -For general information regarding FreeBSD Security Advisories, -including descriptions of the fields above, security branches, and the -following sections, please visit -<URL:http://www.freebsd.org/security/>. - -I. Background - -The AMD64 architecture has two mechanisms for permitting processes to -access hardware: Kernel code can access hardware directly by reason of -its elevated privilege level, while user code can access a subset of -hardware determined by a bitmap. - -II. Problem Description - -The bitmap which determines which hardware can be accessed by unprivileged -processes was not initialized properly. - -III. Impact - -Unprivileged users on amd64 systems can gain direct access to some -hardware, allowing for denial of service, disclosure of sensitive -information, or possible privilege escalation. - -IV. Workaround - -No workaround is known for amd64 systems; other platforms are not -affected by this issue. - -V. Solution - -Perform one of the following: - -1) Upgrade your vulnerable system to 5-STABLE or to the RELENG_5_3 -security branch dated after the correction date. - -2) To patch your present system: - -a) Download the patch from the location below, and verify the detached -PGP signature using your PGP utility. - -# fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-05:03/amd64.patch -# fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-05:03/amd64.patch.asc - -b) Apply the patch. - -# cd /usr/src -# patch < /path/to/patch - -c) Recompile your kernel as described in -<URL:http://www.freebsd.org/handbook/kernelconfig.html> and reboot the -system. - -VI. Correction details - -The following list contains the revision numbers of each file that was -corrected in FreeBSD. - -Branch Revision - Path -- ------------------------------------------------------------------------- -RELENG_5 - src/sys/amd64/amd64/machdep.c 1.618.2.10 - src/sys/amd64/amd64/mp_machdep.c 1.242.2.8 - src/sys/amd64/include/tss.h 1.16.2.1 -RELENG_5_4 - src/UPDATING 1.342.2.24.2.2 - src/sys/amd64/amd64/machdep.c 1.618.2.9.2.1 - src/sys/amd64/amd64/mp_machdep.c 1.242.2.7.2.1 - src/sys/amd64/include/tss.h 1.16.6.1 -RELENG_5_3 - src/UPDATING 1.342.2.13.2.11 - src/sys/conf/newvers.sh 1.62.2.15.2.13 - src/sys/amd64/amd64/machdep.c 1.618.2.1.2.1 - src/sys/amd64/amd64/mp_machdep.c 1.242.2.2.2.1 - src/sys/amd64/include/tss.h 1.16.4.1 -- ------------------------------------------------------------------------- - -The latest revision of this advisory is available at -ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:03.amd64.asc ------BEGIN PGP SIGNATURE----- -Version: GnuPG v1.4.1 (FreeBSD) - -iD8DBQFCdsQfFdaIBMps37IRAnIGAJ453F2kq8j86y2MDS0JqZ0JBS5+AwCbBU8t -RPLxihOwLQuoTtKykfrgeBA= -=UEL1 ------END PGP SIGNATURE----- |