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# Security update for squashfs
Announcement ID: SUSE-SU-2024:2463-1
Rating: important
References:
* bsc#1189936
* bsc#1190531
* bsc#935380
Cross-References:
* CVE-2015-4645
* CVE-2015-4646
* CVE-2021-40153
* CVE-2021-41072
CVSS scores:
* CVE-2015-4645 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
* CVE-2015-4645 ( NVD ): 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
* CVE-2015-4646 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
* CVE-2021-40153 ( SUSE ): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
* CVE-2021-40153 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
* CVE-2021-41072 ( SUSE ): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
* CVE-2021-41072 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Affected Products:
* SUSE Linux Enterprise Micro 5.5
An update that solves four vulnerabilities can now be installed.
## Description:
This update for squashfs fixes the following issues:
* CVE-2015-4645,CVE-2015-4646: Multiple buffer overflows fixed in squashfs-
tools (bsc#935380)
* CVE-2021-40153: Fixed an issue where an attacker might have been able to
write a file outside of destination (bsc#1189936)
* CVE-2021-41072: Fixed an issue where an attacker might have been able to
write a file outside the destination directory via a symlink (bsc#1190531).
update to 4.6.1:
* Race condition which can cause corruption of the "fragment table"
fixed.
This is a regression introduced in August 2022, and it has been seen when
tailend packing is used (-tailends option).
* Fix build failure when the tools are being built without extended attribute
(XATTRs) support.
* Fix XATTR error message when an unrecognised prefix is found
* Fix incorrect free of pointer when an unrecognised XATTR prefix is found.
* Major improvements in extended attribute handling, pseudo file handling,
and
miscellaneous new options and improvements
* Extended attribute handling improved in Mksquashfs and Sqfstar
* New Pseudo file xattr definition to add extended attributes to files.
* New xattrs-add Action to add extended attributes to files
* Extended attribute handling improved in Unsquashfs
* Other major improvements
* Unsquashfs can now output Pseudo files to standard out.
* Mksquashfs can now input Pseudo files from standard in.
* Squashfs filesystems can now be converted (different block size compression
etc) without unpacking to an intermediate filesystem or mounting, by piping
the output of Unsquashfs to Mksquashfs.
* Pseudo files are now supported by Sqfstar.
* "Non-anchored" excludes are now supported by Unsquashfs.
update to 4.5.1 (bsc#1190531, CVE-2021-41072):
* This release adds Manpages for Mksquashfs(1), Unsquashfs(1), Sqfstar(1) and
Sqfscat(1).
* The -help text output from the utilities has been improved and extended as
well (but the Manpages are now more comprehensive).
* CVE-2021-41072 which is a writing outside of destination exploit, has been
fixed.
* The number of hard-links in the filesystem is now also displayed by
Mksquashfs in the output summary.
* The number of hard-links written by Unsquashfs is now also displayed in the
output summary.
* Unsquashfs will now write to a pre-existing destination directory, rather
than aborting.
* Unsquashfs now allows "." to used as the destination, to extract to
the
current directory.
* The Unsquashfs progress bar now tracks empty files and hardlinks, in
addition to data blocks.
* -no-hardlinks option has been implemented for Sqfstar.
* More sanity checking for "corrupted" filesystems, including checks
for
multiply linked directories and directory loops.
* Options that may cause filesystems to be unmountable have been moved into a
new "experts" category in the Mksquashfs help text (and Manpage).
* Maximum cpiostyle filename limited to PATH_MAX. This prevents attempts to
overflow the stack, or cause system calls to fail with a too long pathname.
* Don't always use "max open file limit" when calculating length
of queues, as
a very large file limit can cause Unsquashfs to abort. Instead use the
smaller of max open file limit and cache size.
* Fix Mksquashfs silently ignoring Pseudo file definitions when appending.
* Don't abort if no XATTR support has been built in, and there's
XATTRs in the
filesystem. This is a regression introduced in 2019 in Version 4.4.
* Fix duplicate check when the last file block is sparse.
update to 4.5:
* Mksquashfs now supports "Actions".
* New sqfstar command which will create a Squashfs image from a tar archive.
* Tar style handling of source pathnames in Mksquashfs.
* Cpio style handling of source pathnames in Mksquashfs.
* New option to throttle the amount of CPU and I/O.
* Mksquashfs now allows no source directory to be specified.
* New Pseudo file "R" definition which allows a Regular file o be
created with
data stored within the Pseudo file.
* Symbolic links are now followed in extract files
* Unsquashfs now supports "exclude" files.
* Max depth traversal option added.
* Unsquashfs can now output a "Pseudo file" representing the input
Squashfs
filesystem.
* New -one-file-system option in Mksquashfs.
* New -no-hardlinks option in Mksquashfs.
* Exit code in Unsquashfs changed to distinguish between non-fatal errors
(exit 2), and fatal errors (exit 1).
* Xattr id count added in Unsquashfs "-stat" output.
* Unsquashfs "write outside directory" exploit fixed.
* Error handling in Unsquashfs writer thread fixed.
* Fix failure to truncate destination if appending aborted.
* Prevent Mksquashfs reading the destination file.
## Patch Instructions:
To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
* SUSE Linux Enterprise Micro 5.5
zypper in -t patch SUSE-SLE-Micro-5.5-2024-2463=1
## Package List:
* SUSE Linux Enterprise Micro 5.5 (ppc64le)
* squashfs-debugsource-4.6.1-150300.3.3.1
* squashfs-debuginfo-4.6.1-150300.3.3.1
* squashfs-4.6.1-150300.3.3.1
## References:
* https://www.suse.com/security/cve/CVE-2015-4645.html
* https://www.suse.com/security/cve/CVE-2015-4646.html
* https://www.suse.com/security/cve/CVE-2021-40153.html
* https://www.suse.com/security/cve/CVE-2021-41072.html
* https://bugzilla.suse.com/show_bug.cgi?id=1189936
* https://bugzilla.suse.com/show_bug.cgi?id=1190531
* https://bugzilla.suse.com/show_bug.cgi?id=935380
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<div class="container">
<h1>Security update for squashfs</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2024:2463-1</td>
</tr>
<tr>
<th>Rating:</th>
<td>important</td>
</tr>
<tr>
<th>References:</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1189936">bsc#1189936</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1190531">bsc#1190531</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=935380">bsc#935380</a>
</li>
</ul>
</td>
</tr>
<tr>
<th>
Cross-References:
</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2015-4645.html">CVE-2015-4645</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2015-4646.html">CVE-2015-4646</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2021-40153.html">CVE-2021-40153</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2021-41072.html">CVE-2021-41072</a>
</li>
</ul>
</td>
</tr>
<tr>
<th>CVSS scores:</th>
<td>
<ul class="list-group">
<li class="list-group-item">
<span
class="cvss-reference">CVE-2015-4645</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span
class="cvss-score">5.5</span>
<span
class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span
class="cvss-reference">CVE-2015-4645</span>
<span class="cvss-source">
(
NVD
):
</span>
<span
class="cvss-score">5.5</span>
<span
class="cvss-vector">CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span
class="cvss-reference">CVE-2015-4646</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span
class="cvss-score">5.5</span>
<span
class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span
class="cvss-reference">CVE-2021-40153</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span
class="cvss-score">6.6</span>
<span
class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N</span>
</li>
<li class="list-group-item">
<span
class="cvss-reference">CVE-2021-40153</span>
<span class="cvss-source">
(
NVD
):
</span>
<span
class="cvss-score">8.1</span>
<span
class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H</span>
</li>
<li class="list-group-item">
<span
class="cvss-reference">CVE-2021-41072</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span
class="cvss-score">6.6</span>
<span
class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N</span>
</li>
<li class="list-group-item">
<span
class="cvss-reference">CVE-2021-41072</span>
<span class="cvss-source">
(
NVD
):
</span>
<span
class="cvss-score">8.1</span>
<span
class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H</span>
</li>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">SUSE Linux
Enterprise Micro 5.5</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves four vulnerabilities can now be
installed.</p>
<h2>Description:</h2>
<p>This update for squashfs fixes the following issues:</p>
<ul>
<li>CVE-2015-4645,CVE-2015-4646: Multiple buffer overflows fixed in
squashfs-tools (bsc#935380)</li>
<li>CVE-2021-40153: Fixed an issue where an attacker might have been able
to write a file outside of destination (bsc#1189936)</li>
<li>CVE-2021-41072: Fixed an issue where an attacker might have been
able to write a file outside the destination directory via a
symlink (bsc#1190531).</li>
</ul>
<p>update to 4.6.1:</p>
<ul>
<li>Race condition which can cause corruption of the "fragment
table" fixed. This is a regression introduced in August 2022,
and it has been seen when tailend packing is used (-tailends
option).</li>
<li>Fix build failure when the tools are being built without
extended attribute (XATTRs) support.</li>
<li>Fix XATTR error message when an unrecognised prefix is
found</li>
<li>Fix incorrect free of pointer when an unrecognised XATTR
prefix is found.</li>
<li>Major improvements in extended attribute handling,
pseudo file handling, and miscellaneous new options and
improvements</li>
<li>Extended attribute handling improved in Mksquashfs and
Sqfstar</li>
<li>New Pseudo file xattr definition to add extended
attributes to files.</li>
<li>New xattrs-add Action to add extended attributes to files</li>
<li>Extended attribute handling improved in Unsquashfs</li>
<li>Other major improvements</li>
<li>Unsquashfs can now output Pseudo files to standard out.</li>
<li>Mksquashfs can now input Pseudo files from standard in.</li>
<li>Squashfs filesystems can now be converted (different
block size compression etc) without unpacking to an
intermediate filesystem or mounting, by piping the output of
Unsquashfs to Mksquashfs.</li>
<li>Pseudo files are now supported by Sqfstar.</li>
<li>"Non-anchored" excludes are now supported by
Unsquashfs.</li>
</ul>
<p>update to 4.5.1 (bsc#1190531, CVE-2021-41072):</p>
<ul>
<li>This release adds Manpages for Mksquashfs(1), Unsquashfs(1),
Sqfstar(1) and Sqfscat(1).</li>
<li>The -help text output from the utilities has been improved
and extended as well (but the Manpages are now more
comprehensive).</li>
<li>CVE-2021-41072 which is a writing outside of destination
exploit, has been fixed.</li>
<li>The number of hard-links in the filesystem is now also
displayed by Mksquashfs in the output summary.</li>
<li>The number of hard-links written by Unsquashfs is now
also displayed in the output summary.</li>
<li>Unsquashfs will now write to a pre-existing destination
directory, rather than aborting.</li>
<li>Unsquashfs now allows "." to used as the
destination, to
extract to the current directory.</li>
<li>The Unsquashfs progress bar now tracks empty files and
hardlinks, in addition to data blocks.</li>
<li>-no-hardlinks option has been implemented for Sqfstar.</li>
<li>More sanity checking for "corrupted" filesystems,
including
checks for multiply linked directories and directory loops.</li>
<li>Options that may cause filesystems to be unmountable have
been moved into a new "experts" category in the
Mksquashfs
help text (and Manpage).</li>
<li>Maximum cpiostyle filename limited to PATH_MAX. This
prevents attempts to overflow the stack, or cause system
calls to fail with a too long pathname.</li>
<li>Don't always use "max open file limit"
when calculating
length of queues, as a very large file limit can cause
Unsquashfs to abort. Instead use the smaller of max open
file limit and cache size.</li>
<li>Fix Mksquashfs silently ignoring Pseudo file definitions
when appending.</li>
<li>Don't abort if no XATTR support has been built in, and
there's XATTRs in the filesystem. This is a regression
introduced in 2019 in Version 4.4.</li>
<li>Fix duplicate check when the last file block is sparse.</li>
</ul>
<p>update to 4.5:</p>
<ul>
<li>Mksquashfs now supports "Actions".</li>
<li>New sqfstar command which will create a Squashfs image from a tar
archive.</li>
<li>Tar style handling of source pathnames in Mksquashfs.</li>
<li>Cpio style handling of source pathnames in Mksquashfs.</li>
<li>New option to throttle the amount of CPU and I/O.</li>
<li>Mksquashfs now allows no source directory to be specified.</li>
<li>New Pseudo file "R" definition which allows a
Regular file
o be created with data stored within the Pseudo file.</li>
<li>Symbolic links are now followed in extract files</li>
<li>Unsquashfs now supports "exclude" files.</li>
<li>Max depth traversal option added.</li>
<li>Unsquashfs can now output a "Pseudo file"
representing the
input Squashfs filesystem.</li>
<li>New -one-file-system option in Mksquashfs.</li>
<li>New -no-hardlinks option in Mksquashfs.</li>
<li>Exit code in Unsquashfs changed to distinguish between
non-fatal errors (exit 2), and fatal errors (exit 1).</li>
<li>Xattr id count added in Unsquashfs "-stat"
output.</li>
<li>Unsquashfs "write outside directory" exploit
fixed.</li>
<li>Error handling in Unsquashfs writer thread fixed.</li>
<li>Fix failure to truncate destination if appending aborted.</li>
<li>Prevent Mksquashfs reading the destination file.</li>
</ul>
<h2>Patch Instructions:</h2>
<p>
To install this SUSE update use the SUSE recommended
installation methods like YaST online_update or "zypper
patch".<br/>
Alternatively you can run the command listed for your product:
</p>
<ul class="list-group">
<li class="list-group-item">
SUSE Linux Enterprise Micro 5.5
<br/>
<code>zypper in -t patch
SUSE-SLE-Micro-5.5-2024-2463=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
SUSE Linux Enterprise Micro 5.5 (ppc64le)
<ul>
<li>squashfs-debugsource-4.6.1-150300.3.3.1</li>
<li>squashfs-debuginfo-4.6.1-150300.3.3.1</li>
<li>squashfs-4.6.1-150300.3.3.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2015-4645.html">https://www.suse.com/security/cve/CVE-2015-4645.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2015-4646.html">https://www.suse.com/security/cve/CVE-2015-4646.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2021-40153.html">https://www.suse.com/security/cve/CVE-2021-40153.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2021-41072.html">https://www.suse.com/security/cve/CVE-2021-41072.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1189936">https://bugzilla.suse.com/show_bug.cgi?id=1189936</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1190531">https://bugzilla.suse.com/show_bug.cgi?id=1190531</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=935380">https://bugzilla.suse.com/show_bug.cgi?id=935380</a>
</li>
</ul>
</div>
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