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Vulnerability of shim: buffer overflow via DHCPv6 TFTP IPv6 Addresses

Synthesis of the vulnerability 

An attacker can generate a buffer overflow via DHCPv6 TFTP IPv6 Addresses of shim, in order to trigger a denial of service, and possibly to run code.
Vulnerable systems: Fedora, openSUSE, RHEL, SUSE Linux Enterprise Desktop, SLES.
Severity of this threat: 2/4.
Creation date: 27/07/2017.
Références of this weakness: CVE-2014-3676, FEDORA-2014-14058, FEDORA-2014-14059, openSUSE-SU-2017:1967-1, RHSA-2014:1801-01, SUSE-SU-2014:1619-1, VIGILANCE-VUL-23372.

Description of the vulnerability 

An attacker can generate a buffer overflow via DHCPv6 TFTP IPv6 Addresses of shim, in order to trigger a denial of service, and possibly to run code.
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This computer vulnerability impacts software or systems such as Fedora, openSUSE, RHEL, SUSE Linux Enterprise Desktop, SLES.

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

Solutions for this threat 

Fedora: new mokutil packages.
New packages are available:
  Fedora 19: mokutil 0.2.0-1.fc19
  Fedora 20: mokutil 0.2.0-1.fc20

Fedora: new shim-signed packages.
New packages are available:
  Fedora 19: shim-signed 0.8-2
  Fedora 20: shim-signed 0.8-3

openSUSE 12/13: new shim packages.
New packages are available:
  openSUSE 12.3: shim 0.7.318.81ee561d-3.22.1
  openSUSE 13.1: shim 0.7.318.81ee561d-7.2

RHEL 7.0: new shim packages.
New packages are available:
  RHEL 7: shim 0.7-8.el7_0

SUSE LE 11: new shim packages.
New packages are available:
  SUSE LE 11: shim 0.7.318.81ee561d-0.9.2
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