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 Linux kernel: memory corruption via PIE Binary Offset2lib Bypass

Synthesis of the vulnerability 

An attacker can generate a memory corruption via PIE Binary Offset2lib Bypass on the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Debian, Junos Space, Linux, openSUSE, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Synology DS***, Synology RS***.
Severity of this weakness: 2/4.
Creation date: 20/06/2017.
Revision date: 29/06/2017.
Références of this bulletin: CERTFR-2017-AVI-365, CVE-2017-1000370, DSA-3981-1, JSA10824, JSA10826, JSA11110, VIGILANCE-VUL-23010.

Description of the vulnerability 

An attacker can generate a memory corruption via PIE Binary Offset2lib Bypass on the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This threat alert impacts software or systems such as Debian, Junos Space, Linux, openSUSE, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Synology DS***, Synology RS***.

Our Vigil@nce team determined that the severity of this computer vulnerability bulletin is medium.

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

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this weakness note.

Solutions for this threat 

Linux kernel: version 4.12.3.
The version 4.12.3 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.11.12.
The version 4.11.12 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.39.
The version 4.9.39 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.78.
The version 4.4.78 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.1.43.
The version 4.1.43 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: workaround for Stack Clash.
A workaround is to recompile ld.so with the "-fstack-check" option.

Debian 8/9: new linux packages.
New packages are available:
  Debian 8: linux 3.16.43-2+deb8u5
  Debian 9: linux 4.9.30-2+deb9u5

Juniper Junos Space: solution.
The solution is indicated in information sources.

Juniper Junos Space: version 20.3R1.
The version 20.3R1 is fixed:
  https://www.juniper.net/support/downloads/

Synology RS/DS: version 6.1.3-15152-3.
The version 6.1.3-15152-3 is fixed:
  https://www.synology.com/

Wind River Linux: solution of Mid-July 2017.
The solution is indicated in information sources.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides a computer vulnerability announce. The technology watch team tracks security threats targeting the computer system.