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Vulnerability of Exiv2: buffer overflow via Exiv2-getULong

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via Exiv2::getULong() of Exiv2, in order to trigger a denial of service, and possibly to run code.
Impacted products: Debian, RHEL, Ubuntu.
Severity of this bulletin: 2/4.
Creation date: 22/10/2019.
Références of this threat: CVE-2019-17402, DLA-2019-1, RHSA-2020:4030-01, USN-4159-1, VIGILANCE-VUL-30687.

Description of the vulnerability 

An attacker can trigger a buffer overflow via Exiv2::getULong() of Exiv2, in order to trigger a denial of service, and possibly to run code.
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This vulnerability announce impacts software or systems such as Debian, RHEL, Ubuntu.

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

Solutions for this threat 

Debian 8: new exiv2 packages.
New packages are available:
  Debian 8: exiv2 0.24-4.1+deb8u5

RHEL 7.8: new exiv2 packages.
New packages are available:
  RHEL 7.8: exiv2 0.27.0-3.el7_8

Ubuntu: new exiv2 packages.
New packages are available:
  Ubuntu 19.10: exiv2 0.25-4ubuntu2.1
  Ubuntu 19.04: exiv2 0.25-4ubuntu1.2
  Ubuntu 18.04 LTS: exiv2 0.25-3.1ubuntu0.18.04.4
  Ubuntu 16.04 LTS: exiv2 0.25-2.1ubuntu16.04.5
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