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Vulnerability of OpenJPEG: buffer overflow via lib/openjp2/mqc.c

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via lib/openjp2/mqc.c of OpenJPEG, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Debian, Fedora, Solaris, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 10/12/2020.
Références of this bulletin: CVE-2020-27814, DLA-2550-1, DSA-4882-1, FEDORA-2020-9cd524eeca, FEDORA-2020-d32853a28d, USN-4685-1, USN-4686-1, USN-4880-1, VIGILANCE-VUL-34080.

Description of the vulnerability 

An attacker can trigger a buffer overflow via lib/openjp2/mqc.c of OpenJPEG, in order to trigger a denial of service, and possibly to run code.
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This threat bulletin impacts software or systems such as Debian, Fedora, Solaris, Ubuntu.

Our Vigil@nce team determined that the severity of this computer threat bulletin 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 computer threat.

Solutions for this threat 

Debian 10: new openjpeg2 packages.
New packages are available:
  Debian 10: openjpeg2 2.3.0-2+deb10u2

Debian 9: new openjpeg2 packages.
New packages are available:
  Debian 9: openjpeg2 2.1.2-1.1+deb9u6

Fedora 32: new mingw-openjpeg2 packages.
New packages are available:
  Fedora 32: mingw-openjpeg2 2.3.1-11.fc32

Fedora 32: new openjpeg2 packages.
New packages are available:
  Fedora 32: openjpeg2 2.3.1-10.fc32

Fedora 33: new mingw-openjpeg2 packages.
New packages are available:
  Fedora 33: mingw-openjpeg2 2.3.1-9.fc33

Fedora 33: new openjpeg2 packages.
New packages are available:
  Fedora 33: openjpeg2 2.3.1-8.fc33

Oracle Solaris: patch for third party software of January 2021 v4.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

Ubuntu 16.04: new libopenjp packages.
New packages are available:
  Ubuntu 16.04 LTS: libopenjp2-7 2.1.2-1.1+deb9u6build0.16.04.1, libopenjp3d7 2.1.2-1.1+deb9u6build0.16.04.1, libopenjpip7 2.1.2-1.1+deb9u6build0.16.04.1

Ubuntu: new ghostscript packages.
New packages are available:
  Ubuntu 18.04 LTS: ghostscript 9.26~dfsg+0-0ubuntu0.18.04.14
  Ubuntu 16.04 LTS: ghostscript 9.26~dfsg+0-0ubuntu0.16.04.14

Ubuntu: new libopenjp packages.
New packages are available:
  Ubuntu 20.10: libopenjp 2.3.1-1ubuntu4.20.10.1
  Ubuntu 20.04 LTS: libopenjp 2.3.1-1ubuntu4.20.04.1
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