128 lines
4.8 KiB
Text
128 lines
4.8 KiB
Text
-----BEGIN PGP SIGNED MESSAGE-----
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Hash: SHA512
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=============================================================================
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FreeBSD-EN-19:09.xinstall Errata Notice
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The FreeBSD Project
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Topic: install(1) broken with partially matching relative paths
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Category: core
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Module: xinstall
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Announced: 2019-05-14
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Affects: All supported versions of FreeBSD
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Corrected: 2019-02-16 04:48:30 UTC (stable/12, 12.0-STABLE)
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2019-05-14 22:51:49 UTC (releng/12.0, 12.0-RELEASE-p4)
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2019-02-16 04:49:10 UTC (stable/11, 11.3-PRERELEASE)
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2019-05-14 22:51:49 UTC (releng/11.2, 11.2-RELEASE-p10)
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For general information regarding FreeBSD Errata Notices and Security
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Advisories, including descriptions of the fields above, security
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branches, and the following sections, please visit
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<URL:https://security.FreeBSD.org/>.
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I. Background
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The install(1) utility installs files and links, optionally calculating
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relative paths for an installed symbolic link.
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II. Problem Description
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Due to an issue in the way install(1) determines common components of the
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source and target paths, the relative link may be incorrectly calculated and
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drop a component of the link because a partial match existed on that
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component.
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III. Impact
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The ports tree and other software very frequently use install(1) to create
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relative symlinks without checking whether a partial match of the path
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exists that would result in such a truncation.
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IV. Workaround
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No workaround is available, but using install(1) to install non-relative
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links and files is unaffected.
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V. Solution
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Perform one of the following:
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1) Upgrade your system to a supported FreeBSD stable or release / security
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branch (releng) dated after the correction date.
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2) To update your system via a binary patch:
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Systems running a RELEASE version of FreeBSD on the i386 or amd64
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platforms can be updated via the freebsd-update(8) utility:
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# freebsd-update fetch
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# freebsd-update install
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3) To update your system via a source code patch:
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The following patches have been verified to apply to the applicable
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FreeBSD release branches.
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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 https://security.FreeBSD.org/patches/EN-19:09/xinstall.patch
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# fetch https://security.FreeBSD.org/patches/EN-19:09/xinstall.patch.asc
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# gpg --verify xinstall.patch.asc
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b) Apply the patch. Execute the following commands as root:
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# cd /usr/src
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# patch < /path/to/patch
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c) Recompile the operating system using buildworld and installworld as
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described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>.
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VI. Correction details
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The following list contains the correction revision numbers for each
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affected branch.
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Branch/path Revision
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- -------------------------------------------------------------------------
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stable/12/ r344205
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releng/12.0/ r347585
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stable/11/ r344206
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releng/11.2/ r347585
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- -------------------------------------------------------------------------
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To see which files were modified by a particular revision, run the
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following command, replacing NNNNNN with the revision number, on a
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machine with Subversion installed:
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# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
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Or visit the following URL, replacing NNNNNN with the revision number:
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<URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
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VII. References
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<URL:https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235330>
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The latest revision of this advisory is available at
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<URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-19:09.xinstall.asc>
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