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 TigerVNC: read-write access via Certificates Stored As Authorities

Synthesis of the vulnerability 

An attacker can bypass access restrictions via Certificates Stored As Authorities of TigerVNC, in order to read or alter data.
Impacted products: Debian, openSUSE Leap, Solaris, SUSE Linux Enterprise Desktop, SLES.
Severity of this bulletin: 2/4.
Creation date: 07/10/2020.
Références of this threat: CVE-2020-26117, DLA-2396-1, openSUSE-SU-2020:1666-1, openSUSE-SU-2020:1841-1, SUSE-SU-2020:2880-1, SUSE-SU-2020:2881-1, SUSE-SU-2020:2882-1, SUSE-SU-2020:2898-1, VIGILANCE-VUL-33495.

Description of the vulnerability 

An attacker can bypass access restrictions via Certificates Stored As Authorities of TigerVNC, in order to read or alter data.
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This weakness bulletin impacts software or systems such as Debian, openSUSE Leap, Solaris, SUSE Linux Enterprise Desktop, SLES.

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

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

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

Solutions for this threat 

Debian 9: new tigervnc packages.
New packages are available:
  Debian 9: tigervnc 1.7.0+dfsg-7+deb9u2

openSUSE Leap 15.1: new tigervnc packages.
New packages are available:
  openSUSE Leap 15.1: tigervnc 1.9.0-lp151.4.9.1

openSUSE Leap 15.2: new tigervnc packages.
New packages are available:
  openSUSE Leap 15.2: tigervnc 1.9.0-lp152.7.3.1

Oracle Solaris: patch for third party software of January 2021 v3.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

SUSE LE 12 SP2-3: new tigervnc packages.
New packages are available:
  SUSE LE 12 SP2: tigervnc 1.6.0-27.1
  SUSE LE 12 SP3: tigervnc 1.6.0-27.1

SUSE LE: new tigervnc packages.
New packages are available:
  SUSE LE 12 SP4: tigervnc 1.6.0-22.17.1
  SUSE LE 12 SP5: tigervnc 1.6.0-22.17.1
  SUSE LE 15 RTM: tigervnc 1.8.0-13.14.1
  SUSE LE 15 SP1: tigervnc 1.9.0-19.9.1
  SUSE LE 15 SP2: tigervnc 1.9.0-19.9.1
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