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: NULL pointer dereference via Second Handshake No_renegotiation

Synthesis of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via Second Handshake No_renegotiation of GnuTLS, in order to trigger a denial of service.
Vulnerable systems: Fedora, openSUSE Leap, Solaris, RHEL, Slackware, SLES, Ubuntu, Unix (platform) ~ not comprehensive.
Severity of this threat: 2/4.
Creation date: 07/09/2020.
Références of this weakness: CVE-2020-24659, FEDORA-2020-0ab6656303, FEDORA-2020-30cd8d9ad6, FEDORA-2020-4246288e21, GNUTLS-SA-2020-09-04, openSUSE-SU-2020:1724-1, openSUSE-SU-2020:1743-1, RHSA-2020:5483-01, SSA:2020-248-01, SUSE-SU-2020:2864-1, SUSE-SU-2020:2988-1, USN-4491-1, VIGILANCE-VUL-33260.

Description of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via Second Handshake No_renegotiation of GnuTLS, in order to trigger a denial of service.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This cybersecurity weakness 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 vulnerability is medium.

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

An attacker with a expert ability can exploit this vulnerability bulletin.

Solutions for this threat 

GnuTLS: version 3.6.15.
The version 3.6.15 is fixed:
  https://www.gnutls.org/download.html

Fedora 31: new gnutls packages.
New packages are available:
  Fedora 31: gnutls 3.6.15-1.fc31

Fedora 32: new gnutls packages.
New packages are available:
  Fedora 32: gnutls 3.6.15-1.fc32

Fedora 32: new mingw-gnutls packages.
New packages are available:
  Fedora 32: mingw-gnutls 3.6.15-1.fc32

openSUSE Leap 15.1: new gnutls packages.
New packages are available:
  openSUSE Leap 15.1: gnutls 3.6.7-lp151.2.21.1

openSUSE Leap 15.2: new gnutls packages.
New packages are available:
  openSUSE Leap 15.2: gnutls 3.6.7-lp152.9.3.2

Oracle Solaris: patch for third party software of October 2020 v3.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL 8.3: new gnutls packages.
New packages are available:
  RHEL 8.3: gnutls 3.6.14-7.el8_3

Slackware: new gnutls packages.
New packages are available:
  Slackware 14.2: gnutls 3.6.15-*-1_slack14.2

SUSE LE 15 RTM-SP1: new gnutls packages.
New packages are available:
  SUSE LE 15 RTM: gnutls 3.6.7-6.34.1
  SUSE LE 15 SP1: gnutls 3.6.7-6.34.1

SUSE LE 15 SP2: new gnutls packages.
New packages are available:
  SUSE LE 15 SP2: gnutls 3.6.7-14.4.1

Ubuntu 20.04: new libgnutls30 packages.
New packages are available:
  Ubuntu 20.04 LTS: libgnutls30 3.6.13-2ubuntu1.3

Wind River Linux: version 10.19.45.12.
The version 10.19.45.12 is fixed:
  https://support2.windriver.com/index.php?page=cve&on=list&show=50&product_id=1&product_version%5B0%5D=24&id_status%5B0%5D=4&cve_id_filter=&s=&submit=&order_by=cve_modified_date&order_way=desc#list
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides cybersecurity announces. Each administrator can customize the list of products for which he wants to receive vulnerability alerts.