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Vulnerability of OpenJPEG: integer overflow via opj_get_encoding_parameters

Synthesis of the vulnerability 

An attacker can trigger an integer overflow via opj_get_encoding_parameters() of OpenJPEG, in order to trigger a denial of service, and possibly to run code.
Vulnerable software: Debian.
Severity of this announce: 2/4.
Creation date: 11/07/2019.
Références of this computer vulnerability: CVE-2018-20847, DLA-1851-1, VIGILANCE-VUL-29737.

Description of the vulnerability 

An attacker can trigger an integer overflow via opj_get_encoding_parameters() of OpenJPEG, in order to trigger a denial of service, and possibly to run code.
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This cybersecurity bulletin impacts software or systems such as Debian.

Our Vigil@nce team determined that the severity of this cybersecurity weakness 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 vulnerability bulletin.

Solutions for this threat 

Debian 8: new openjpeg2 packages.
New packages are available:
  Debian 8: openjpeg2 2.1.0-2+deb8u7
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