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 GnuTLS: use after free via X.509 Certificate Verification

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via X.509 Certificate Verification of GnuTLS, in order to trigger a denial of service, and possibly to run code.
Impacted software: Fedora, openSUSE Leap, Solaris, RHEL, Slackware, SLES, Ubuntu, Unix (platform) ~ not comprehensive.
Severity of this computer vulnerability: 3/4.
Creation date: 28/03/2019.
Références of this announce: 1772, bulletinoct2020, CVE-2019-3829, FEDORA-2019-46df367eed, GNUTLS-SA-2019-03-27, openSUSE-SU-2019:1353-1, RHSA-2019:3600-01, SSA:2019-086-01, SUSE-SU-2019:1121-1, SUSE-SU-2019:1351-1, USN-3999-1, VIGILANCE-VUL-28882.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via X.509 Certificate Verification of GnuTLS, in order to trigger a denial of service, and possibly to run code.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This security alert impacts software or systems such as Fedora, openSUSE Leap, Solaris, RHEL, Slackware, SLES, Ubuntu, Unix (platform) ~ not comprehensive.

Our Vigil@nce team determined that the severity of this security weakness is important.

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

An attacker with a expert ability can exploit this security announce.

Solutions for this threat 

GnuTLS: version 3.6.7.
The version 3.6.7 is fixed:
  http://www.gnutls.org/download.html
  ftp://ftp.gnutls.org/gcrypt/gnutls/

Fedora 28: new gnutls packages.
New packages are available:
  Fedora 28: gnutls 3.6.5-3.fc28

openSUSE Leap 15.0: new gnutls packages.
New packages are available:
  openSUSE Leap 15.0: gnutls 3.6.7-lp150.9.1

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

RHEL 8: new gnutls packages.
New packages are available:
  RHEL 8: gnutls 3.6.8-8.el8

Slackware: new gnutls packages.
New packages are available:
  Slackware 14.2: gnutls 3.6.7-*-1_slack14.2

SUSE LE 15: new gnutls packages.
New packages are available:
  SUSE LE 15 RTM: gnutls 3.6.7-6.11.1

Ubuntu: new libgnutls30 packages.
New packages are available:
  Ubuntu 19.04: libgnutls30 3.6.5-2ubuntu1.1
  Ubuntu 18.10: libgnutls30 3.6.4-2ubuntu1.2
  Ubuntu 18.04 LTS: libgnutls30 3.5.18-1ubuntu1.1
  Ubuntu 16.04 LTS: libgnutls30 3.4.10-4ubuntu1.5

Wind River Linux: solution (21/05/2019).
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 computers vulnerabilities watch. The Vigil@nce computer vulnerability tracking service alerts your teams of vulnerabilities or threats impacting your information system.