File _patchinfo of Package patchinfo.31321

<patchinfo incident="31321">
  <issue tracker="cve" id="2015-4646"/>
  <issue tracker="cve" id="2015-4645"/>
  <issue tracker="cve" id="2021-41072"/>
  <issue tracker="cve" id="2021-40153"/>
  <issue tracker="bnc" id="1189936">VUL-0: CVE-2021-40153: squashfs: unvalidated filepaths allow writing outside of destination</issue>
  <issue tracker="bnc" id="1190531">VUL-0: CVE-2021-41072: squashfs: unvalidated symlinks allow writing outside of destination</issue>
  <issue tracker="bnc" id="935380">VUL-1: CVE-2015-4645,CVE-2015-4646: squashfs: Multiple stack overflows in squashfs-tools</issue>
  <packager>duwe</packager>
  <rating>important</rating>
  <category>security</category>
  <summary>Security update for squashfs</summary>
  <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. 
</description>
</patchinfo>