Twenty Year Anniversary

Ubuntu Security Notice USN-3430-3

Ubuntu Security Notice USN-3430-3
Posted Jan 4, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3430-3 - USN-3430-2 fixed several vulnerabilities. The update introduced a new regression that breaks DNS resolution. This update addresses the problem. Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher discovered that Dnsmasq incorrectly handled DNS requests. A remote attacker could use this issue to cause Dnsmasq to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-14491, CVE-2017-14492, CVE-2017-14493, CVE-2017-14494, CVE-2017-14495, CVE-2017-14496
MD5 | 2e78e5477e350e6229ac4eeeb1a64bea

Ubuntu Security Notice USN-3430-3

Change Mirror Download

===========================================================================
Ubuntu Security Notice USN-3430-3
January 04, 2018

dnsmasq regression
===========================================================================

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

- Ubuntu 12.04 ESM

Summary:

USN-3430-2 introduced regression in Dnsmasq.

Software Description:
- dnsmasq: Small caching DNS proxy and DHCP/TFTP server

Details:

USN-3430-2 fixed several vulnerabilities. The update introduced a new
regression that breaks DNS resolution. This update addresses the
problem.

We apologize for the inconvenience.

Original advisory details:

Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
discovered that Dnsmasq incorrectly handled DNS requests. A remote
attacker could use this issue to cause Dnsmasq to crash, resulting in
a denial of service, or possibly execute arbitrary code.
(CVE-2017-14491)

Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
discovered that Dnsmasq incorrectly handled IPv6 router
advertisements. A remote attacker could use this issue to cause
Dnsmasq to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2017-14492)

Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
discovered that Dnsmasq incorrectly handled DHCPv6 requests. A remote
attacker could use this issue to cause Dnsmasq to crash, resulting in
a denial of service, or possibly execute arbitrary code.
(CVE-2017-14493)

Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
discovered that Dnsmasq incorrectly handled DHCPv6 packets. A remote
attacker could use this issue to possibly obtain sensitive memory
contents. (CVE-2017-14494)

Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
discovered that Dnsmasq incorrectly handled DNS requests. A remote
attacker could use this issue to cause Dnsmasq to consume memory,
resulting in a denial of service. (CVE-2017-14495)

Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
discovered that Dnsmasq incorrectly handled DNS requests. A remote
attacker could use this issue to cause Dnsmasq to crash, resulting in
a denial of service. (CVE-2017-14496)

Update instructions:

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

Ubuntu 12.04 ESM:
dnsmasq=C2=A02.59-4ubuntu0.4
dnsmasq-base2.59-4ubuntu0.4
dnsmasq-utils2.59-4ubuntu0.4

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://www.ubuntu.com/usn/usn-3430-3
https://www.ubuntu.com/usn/usn-3430-1
https://launchpad.net/bugs/1741262

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

Want To Donate?


Bitcoin: 18PFeCVLwpmaBuQqd5xAYZ8bZdvbyEWMmU

File Archive:

June 2018

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jun 1st
    14 Files
  • 2
    Jun 2nd
    1 Files
  • 3
    Jun 3rd
    3 Files
  • 4
    Jun 4th
    18 Files
  • 5
    Jun 5th
    21 Files
  • 6
    Jun 6th
    8 Files
  • 7
    Jun 7th
    16 Files
  • 8
    Jun 8th
    18 Files
  • 9
    Jun 9th
    5 Files
  • 10
    Jun 10th
    2 Files
  • 11
    Jun 11th
    21 Files
  • 12
    Jun 12th
    32 Files
  • 13
    Jun 13th
    15 Files
  • 14
    Jun 14th
    16 Files
  • 15
    Jun 15th
    4 Files
  • 16
    Jun 16th
    1 Files
  • 17
    Jun 17th
    2 Files
  • 18
    Jun 18th
    15 Files
  • 19
    Jun 19th
    15 Files
  • 20
    Jun 20th
    15 Files
  • 21
    Jun 21st
    15 Files
  • 22
    Jun 22nd
    7 Files
  • 23
    Jun 23rd
    0 Files
  • 24
    Jun 24th
    0 Files
  • 25
    Jun 25th
    0 Files
  • 26
    Jun 26th
    0 Files
  • 27
    Jun 27th
    0 Files
  • 28
    Jun 28th
    0 Files
  • 29
    Jun 29th
    0 Files
  • 30
    Jun 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2018 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close