The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of Dnsmasq: memory leak via DHCP Response Creation

Synthesis of the vulnerability 

An attacker can create a memory leak via DHCP Response Creation of Dnsmasq, in order to trigger a denial of service.
Vulnerable systems: Junos Space, Junos Space Network Management Platform, openSUSE Leap, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES.
Severity of this threat: 2/4.
Creation date: 05/12/2019.
Références of this weakness: CVE-2019-14834, JSA11174, JSA11176, openSUSE-SU-2019:2669-1, RHSA-2020:1715-01, RHSA-2020:3878-01, SUSE-SU-2019:3188-1, SUSE-SU-2019:3189-1, SUSE-SU-2020:0419-1, VIGILANCE-VUL-31070.

Description of the vulnerability 

An attacker can create a memory leak via DHCP Response Creation of Dnsmasq, in order to trigger a denial of service.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This weakness note impacts software or systems such as Junos Space, Junos Space Network Management Platform, openSUSE Leap, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this threat note is medium.

The trust level is of type confirmed by the editor, with an origin of LAN.

An attacker with a expert ability can exploit this computer weakness.

Solutions for this threat 

Junos Space: version 21.1R1.
The version 21.1R1 is fixed:
  https://support.juniper.net/support/downloads/
The version fixes more than 450 vulnerabilities, but only the 100 recent vulnerabilities were associated to this bulletin.

openSUSE Leap 15.1: new dnsmasq packages.
New packages are available:
  openSUSE Leap 15.1: dnsmasq 2.78-lp151.5.3.1

Oracle Solaris: patch for third party software of July 2020 v2.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL 7.8: new dnsmasq packages.
New packages are available:
  RHEL 7.0-7.8: dnsmasq 2.76-16.el7

RHEL 8: new dnsmasq packages.
New packages are available:
  RHEL 8.0-8.1: dnsmasq 2.79-11.el8

SUSE LE 12 SP4/5: new dnsmasq packages.
New packages are available:
  SUSE LE 12 SP4: dnsmasq 2.78-18.12.1
  SUSE LE 12 SP5: dnsmasq 2.78-18.12.1

SUSE LE 15 RTM: new dnsmasq packages.
New packages are available:
  SUSE LE 15 RTM: dnsmasq 2.78-3.8.1

SUSE LE 15 SP1: new dnsmasq packages.
New packages are available:
  SUSE LE 15 SP1: dnsmasq 2.78-7.3.1

Wind River Linux: version 10.17.41.20.
The version 10.17.41.20 is fixed:
  https://support2.windriver.com/

Wind River Linux: version 10.19.45.4.
The version 10.19.45.4 is fixed:
  https://support2.windriver.com/
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides a computer security announce. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system.