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Vulnerability of SUSE wicked: use after free via DHCP6 IA_PD Options

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via DHCP6 IA_PD Options of SUSE wicked, in order to trigger a denial of service, and possibly to run code.
Impacted systems: openSUSE Leap, RSA Authentication Manager, SUSE Linux Enterprise Desktop, SLES.
Severity of this alert: 2/4.
Creation date: 07/02/2020.
Références of this alert: CVE-2019-18903, DSA-2020-112, openSUSE-SU-2020:0207-1, SUSE-SU-2020:0347-1, SUSE-SU-2020:0351-1, SUSE-SU-2020:0358-1, SUSE-SU-2020:0369-1, SUSE-SU-2020:0370-1, SUSE-SU-2020:0410-1, VIGILANCE-VUL-31541.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via DHCP6 IA_PD Options of SUSE wicked, in order to trigger a denial of service, and possibly to run code.
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This cybersecurity bulletin impacts software or systems such as openSUSE Leap, RSA Authentication Manager, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this cybersecurity weakness 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 vulnerability bulletin.

Solutions for this threat 

openSUSE Leap 15.1: new wicked packages.
New packages are available:
  openSUSE Leap 15.1: wicked 0.6.60-lp151.2.9.1

RSA Authentication Manager: version 8.4 Patch 12.
The version 8.4 Patch 12 is fixed:
  https://www.dell.com/support/

SUSE LE 12 SP1: new wicked packages.
New packages are available:
  SUSE LE 12 SP1: wicked 0.6.60-28.26.1

SUSE LE 12 SP2/3: new wicked packages.
New packages are available:
  SUSE LE 12 SP2: wicked 0.6.60-38.27.1
  SUSE LE 12 SP3: wicked 0.6.60-38.27.1

SUSE LE 12 SP4: new wicked packages.
New packages are available:
  SUSE LE 12 SP4: wicked 0.6.60-2.18.1

SUSE LE 12 SP5: new wicked packages.
New packages are available:
  SUSE LE 12 SP5: wicked 0.6.60-3.5.1

SUSE LE 15 RTM: new wicked packages.
New packages are available:
  SUSE LE 15 RTM: wicked 0.6.60-3.24.1

SUSE LE 15 SP1: new wicked packages.
New packages are available:
  SUSE LE 15 SP1: wicked 0.6.60-3.13.1
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