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Vulnerability of LibTIFF: assertion error via TIFFWriteDirectorySec

Synthesis of the vulnerability 

An attacker can force an assertion error via TIFFWriteDirectorySec() of LibTIFF, in order to trigger a denial of service.
Vulnerable systems: Debian, LibTIFF, openSUSE Leap, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this threat: 2/4.
Creation date: 11/05/2018.
Références of this weakness: 2795, CVE-2018-10963, DLA-1411-1, DSA-4349-1, openSUSE-SU-2018:1834-1, openSUSE-SU-2018:1956-1, RHSA-2019:2053-01, SSA:2018-316-01, SUSE-SU-2018:1826-1, SUSE-SU-2018:1889-1, USN-3864-1, VIGILANCE-VUL-26114.

Description of the vulnerability 

An attacker can force an assertion error via TIFFWriteDirectorySec() of LibTIFF, in order to trigger a denial of service.
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This cybersecurity threat impacts software or systems such as Debian, LibTIFF, openSUSE Leap, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

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

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

Solutions for this threat 

LibTIFF: version 4.0.10.
The version 4.0.10 is fixed:
  http://www.simplesystems.org/libtiff/

LibTIFF: patch for TIFFWriteDirectorySec.
A patch is indicated in information sources.

Cloud Foundry: fixed versions for LibTIFF.
Fixed versions are indicated in information sources.

Debian 8: new tiff packages.
New packages are available:
  Debian 8: tiff 4.0.3-12.3+deb8u6

Debian 9: new tiff packages.
New packages are available:
  Debian 9: tiff 4.0.8-2+deb9u4

openSUSE Leap 15.0: new tiff packages.
New packages are available:
  openSUSE Leap 15.0: tiff 4.0.9-lp150.4.3.1

openSUSE Leap 42.3: new tiff packages.
New packages are available:
  openSUSE Leap 42.3: tiff 4.0.9-31.1

RHEL 7: new libtiff packages.
New packages are available:
  RHEL 7: libtiff 4.0.3-32.el7

Slackware: new libtiff packages.
New packages are available:
  Slackware 14.2: libtiff 4.0.10-*-1_slack14.2

SUSE LE 12 SP3: new tiff packages (28/06/2018).
New packages are available:
  SUSE LE 12 SP3: libtiff 4.0.9-44.15.2

SUSE LE 15: new tiff packages.
New packages are available:
  SUSE LE 15 RTM: tiff 4.0.9-5.9.1

Ubuntu: new libtiff5 packages.
New packages are available:
  Ubuntu 18.10: libtiff-tools 4.0.9-6ubuntu0.1, libtiff5 4.0.9-6ubuntu0.1
  Ubuntu 18.04 LTS: libtiff-tools 4.0.9-5ubuntu0.1, libtiff5 4.0.9-5ubuntu0.1
  Ubuntu 16.04 LTS: libtiff-tools 4.0.6-1ubuntu0.5, libtiff5 4.0.6-1ubuntu0.5
  Ubuntu 14.04 LTS: libtiff-tools 4.0.3-7ubuntu0.10, libtiff5 4.0.3-7ubuntu0.10
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