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419a5e5ce8
GRUB was designed to run in a trusted environment, where anyone with access to grub2.cfg could also modify grub itself. In grub2-bhyve, we have modified it to run in host context, but interpret the commands of guest grub2.cfg. This means we have to worry about malicious guests. This patch addresses two escalation vectors: font-loading, and the direct 'read', 'write', 'in', and 'out' commands (which read/write arbitrary addresses). Both reported by Reno Robert. Disable font-loading by neutering the command. It is believed to be non- essential and there is at least one buffer overflow in the font loading code. Disable reading and writing host memory and IO ports. It is believed to be non-essential. admbugs: 948 Reported by: Reno Robert <renorobert AT gmail.com> Approved by: bapt MFH: 2010Q1 (bapt) Security: yes
43 lines
1.0 KiB
Makefile
43 lines
1.0 KiB
Makefile
# Created by: kmoore@FreeBSD.org
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# $FreeBSD$
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PORTNAME= grub2-bhyve
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DISTVERSIONPREFIX= v
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DISTVERSION= 0.40
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PORTREVISION= 8
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CATEGORIES= sysutils
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MAINTAINER= ports@FreeBSD.org
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COMMENT= Grub-emu loader for bhyve
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LICENSE= GPLv3
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BUILD_DEPENDS= ${LOCALBASE}/bin/flex:textproc/flex \
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help2man:misc/help2man
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ONLY_FOR_ARCHS= amd64
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SSP_UNSAFE= yes
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USE_GITHUB= yes
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GH_ACCOUNT= grehan-freebsd
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USES= bison gmake
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USE_GCC= yes
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PLIST_FILES= sbin/grub-bhyve
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MAKE_JOBS_UNSAFE= yes
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CONFIGURE_ARGS= --with-platform=emu CC=${CC} LEX=${LOCALBASE}/bin/flex \
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--enable-grub-mount=no --enable-grub-mkfont=no \
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--enable-grub-emu-sdl=no --disable-nls --disable-werror
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post-patch:
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@${REINPLACE_CMD} -e "s/libintl\.h/I_do_not_want_libintl.h/g" ${WRKSRC}/configure
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@${REINPLACE_CMD} -e "s/-lintl//g" ${WRKSRC}/grub-core/Makefile.in
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do-configure:
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@ cd ${WRKSRC}/ && ./configure ${CONFIGURE_ARGS}
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do-install:
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${INSTALL_PROGRAM} ${WRKSRC}/grub-core/grub-emu ${STAGEDIR}${LOCALBASE}/sbin/grub-bhyve
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.include <bsd.port.mk>
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RUN_DEPENDS:= ${RUN_DEPENDS:Ngcc*}
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