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Vulnerability of Exiv2: integer overflow via CiffDirectory-readDirectory

Synthesis of the vulnerability 

An attacker can trigger an integer overflow via CiffDirectory::readDirectory() of Exiv2, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Fedora, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 16/07/2019.
Références of this bulletin: CVE-2019-13110, FEDORA-2019-60553d5a18, USN-4056-1, VIGILANCE-VUL-29778.

Description of the vulnerability 

An attacker can trigger an integer overflow via CiffDirectory::readDirectory() of Exiv2, in order to trigger a denial of service, and possibly to run code.
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This computer vulnerability announce impacts software or systems such as Fedora, Ubuntu.

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

Solutions for this threat 

Fedora 30: new exiv2 packages.
New packages are available:
  Fedora 30: exiv2 0.27.2-1.fc30

Ubuntu: new exiv2 packages.
New packages are available:
  Ubuntu 19.04: exiv2 0.25-4ubuntu1.1, libexiv2-14 0.25-4ubuntu1.1
  Ubuntu 18.10: exiv2 0.25-4ubuntu0.2, libexiv2-14 0.25-4ubuntu0.2
  Ubuntu 18.04 LTS: exiv2 0.25-3.1ubuntu0.18.04.3, libexiv2-14 0.25-3.1ubuntu0.18.04.3
  Ubuntu 16.04 LTS: exiv2 0.25-2.1ubuntu16.04.4, libexiv2-14 0.25-2.1ubuntu16.04.4
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