Debian LTS: DLA-2559-1: busybox security update
Summary
Busybox, utility programs for small and embedded systems, was affected
by several security vulnerabilities. The Common Vulnerabilities and
Exposures project identifies the following issues.
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-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 contains a Buffer Overflow vulnerability in
Busybox wget that can result in a heap-based buffer overflow.
This attack appears to be exploitable via network connectivity.
CVE-2015-9621
Unziping a specially crafted zip file results in a computation of an
invalid pointer and a crash reading an invalid address.
For Debian 9 stretch, these problems have been fixed in version
1:1.22.0-19+deb9u1.
We recommend that you upgrade your busybox packages.
For the detailed security status of busybox please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/busybox
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS