<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>