ELA-20-1 busybox security update

multiple vulnerabilites

Packagebusybox
Version1:1.20.0-7+deb7u1
Related CVE CVE-2011-5325 CVE-2013-1813 CVE-2014-4607 CVE-2014-9645 CVE-2015-9261 CVE-2016-2147 CVE-2016-2148 CVE-2017-15873 CVE-2017-16544 CVE-2018-1000517

CVE-2011-5325

A path traversal vulnerability was found in Busybox implementation of tar.
tar will extract a symlink that points outside of the current working
directory and then follow that symlink when extracting other files. This
allows for a directory traversal attack when extracting untrusted tarballs.

CVE-2013-1813

When device node or symlink in /dev should be created inside 2-or-deeper
subdirectory (/dev/dir1/dir2.../node), the intermediate directories are
created with incorrect permissions.

CVE-2014-4607

An integer overflow may occur when processing any variant of a "literal
run" in the lzo1x_decompress_safe function. Each of these three locations
is subject to an integer overflow when processing zero bytes. This exposes
the code that copies literals to memory corruption.

CVE-2014-9645

The add_probe function in modutils/modprobe.c in BusyBox allows local users
to bypass intended restrictions on loading kernel modules via a / (slash)
character in a module name, as demonstrated by an "ifconfig /usbserial up"
command or a "mount -t /snd_pcm none /" command.

CVE-2015-9261

Unziping a specially crafted zip file results in a computation of an
invalid pointer and a crash reading an invalid address.

CVE-2016-2147

Integer overflow in the DHCP client (udhcpc) in BusyBox allows remote
attackers to cause a denial of service (crash) via a malformed
RFC1035-encoded domain name, which triggers an out-of-bounds heap write.

CVE-2016-2148

Heap-based buffer overflow in the DHCP client (udhcpc) in BusyBox allows
remote attackers to have unspecified impact via vectors involving
OPTION_6RD parsing.

CVE-2017-15873

The get_next_block function in archival/libarchive/decompress_bunzip2.c in
BusyBox has an Integer Overflow that may lead to a write access violation.

CVE-2017-16544

In the add_match function in libbb/lineedit.c in BusyBox, the tab
autocomplete feature of the shell, used to get a list of filenames in a
directory, does not sanitize filenames and results in executing any escape
sequence in the terminal. This could potentially result in code execution,
arbitrary file writes, or other attacks.

CVE-2018-1000517

BusyBox project BusyBox wget contains a Buffer Overflow vulnerability in
Busybox wget that can result in heap buffer overflow. This attack appear to
be exploitable via network connectivity.

For Debian 7 Wheezy, these problems have been fixed in version 1:1.20.0-7+deb7u1.

We recommend that you upgrade your busybox packages.

Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/