ESB-2019.1136 - [Ubuntu] BusyBox: Multiple vulnerabilities 2019-04-04

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1136
                    USN-3935-1: BusyBox vulnerabilities
                               4 April 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           BusyBox
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Access Privileged Data          -- Remote/Unauthenticated      
                   Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Modify Arbitrary Files          -- Remote with User Interaction
                   Denial of Service               -- Remote/Unauthenticated      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-5747 CVE-2018-1000517 CVE-2018-20679
                   CVE-2017-16544 CVE-2017-15873 CVE-2016-2148
                   CVE-2016-2147 CVE-2015-9261 CVE-2014-9645
                   CVE-2011-5325  

Reference:         ESB-2019.0594
                   ESB-2017.0518
                   ESB-2016.2783
                   ESB-2018.2183.3

Original Bulletin: 
   https://usn.ubuntu.com/3935-1/

- --------------------------BEGIN INCLUDED TEXT--------------------

USN-3935-1: BusyBox vulnerabilities
3 April 2019

busybox vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 18.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS
  o Ubuntu 14.04 LTS

Summary

Several security issues were fixed in BusyBox.

Software Description

  o busybox - Tiny utilities for small and embedded systems

Details

Tyler Hicks discovered that BusyBox incorrectly handled symlinks inside tar
archives. If a user or automated system were tricked into processing a
specially crafted tar archive, a remote attacker could overwrite arbitrary
files outside of the current directory. This issue only affected Ubuntu 14.04
LTS and Ubuntu 16.04 LTS. (CVE-2011-5325)

Mathias Krause discovered that BusyBox incorrectly handled kernel module
loading restrictions. A local attacker could possibly use this issue to bypass
intended restrictions. This issue only affected Ubuntu 14.04 LTS.
(CVE-2014-9645)

It was discovered that BusyBox incorrectly handled certain ZIP archives. If a
user or automated system were tricked into processing a specially crafted ZIP
archive, a remote attacker could cause BusyBox to crash, leading to a denial of
service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
(CVE-2015-9261)

Nico Golde discovered that the BusyBox DHCP client incorrectly handled certain
malformed domain names. A remote attacker could possibly use this issue to
cause the DHCP client to crash, leading to a denial of service. This issue only
affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-2147)

Nico Golde discovered that the BusyBox DHCP client incorrectly handled certain
6RD options. A remote attacker could use this issue to cause the DHCP client to
crash, leading to a denial of service, or possibly execute arbitrary code. This
issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-2148)

It was discovered that BusyBox incorrectly handled certain bzip2 archives. If a
user or automated system were tricked into processing a specially crafted bzip2
archive, a remote attacker could cause BusyBox to crash, leading to a denial of
service, or possibly execute arbitrary code. This issue only affected Ubuntu
14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-15873)

It was discovered that BusyBox incorrectly handled tab completion. A local
attacker could possibly use this issue to execute arbitrary code. This issue
only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-16544)

It was discovered that the BusyBox wget utility incorrectly handled certain
responses. A remote attacker could use this issue to cause BusyBox to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2018-1000517)

It was discovered that the BusyBox DHCP utilities incorrectly handled certain
memory operations. A remote attacker could possibly use this issue to access
sensitive information. (CVE-2018-20679, CVE-2019-5747)

Update instructions

The problem can be corrected by updating your system to the following package
versions:

Ubuntu 18.10
    busybox - 1:1.27.2-2ubuntu4.1
    busybox-initramfs - 1:1.27.2-2ubuntu4.1
    busybox-static - 1:1.27.2-2ubuntu4.1
    udhcpc - 1:1.27.2-2ubuntu4.1
    udhcpd - 1:1.27.2-2ubuntu4.1
Ubuntu 18.04 LTS
    busybox - 1:1.27.2-2ubuntu3.2
    busybox-initramfs - 1:1.27.2-2ubuntu3.2
    busybox-static - 1:1.27.2-2ubuntu3.2
    udhcpc - 1:1.27.2-2ubuntu3.2
    udhcpd - 1:1.27.2-2ubuntu3.2
Ubuntu 16.04 LTS
    busybox - 1:1.22.0-15ubuntu1.4
    busybox-initramfs - 1:1.22.0-15ubuntu1.4
    busybox-static - 1:1.22.0-15ubuntu1.4
    udhcpc - 1:1.22.0-15ubuntu1.4
    udhcpd - 1:1.22.0-15ubuntu1.4
Ubuntu 14.04 LTS
    busybox - 1:1.21.0-1ubuntu1.4
    busybox-initramfs - 1:1.21.0-1ubuntu1.4
    busybox-static - 1:1.21.0-1ubuntu1.4
    udhcpc - 1:1.21.0-1ubuntu1.4
    udhcpd - 1:1.21.0-1ubuntu1.4

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

In general, a standard system update will make all the necessary changes.

References

  o CVE-2011-5325
  o CVE-2014-9645
  o CVE-2015-9261
  o CVE-2016-2147
  o CVE-2016-2148
  o CVE-2017-15873
  o CVE-2017-16544
  o CVE-2018-1000517
  o CVE-2018-20679
  o CVE-2019-5747

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=FnqN
-----END PGP SIGNATURE-----

« Back to bulletins