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Vulnerability of OpenSC: out-of-bounds memory reading via SETCOS File Attribute

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via SETCOS File Attribute of OpenSC, in order to trigger a denial of service, or to obtain sensitive information.
Impacted systems: Debian, Fedora.
Severity of this alert: 2/4.
Creation date: 30/12/2019.
Références of this alert: CVE-2019-19479, DLA-2046-1, FEDORA-2020-3c93790abe, VIGILANCE-VUL-31235.

Description of the vulnerability 

An attacker can force a read at an invalid address via SETCOS File Attribute of OpenSC, in order to trigger a denial of service, or to obtain sensitive information.
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This cybersecurity announce impacts software or systems such as Debian, Fedora.

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

Solutions for this threat 

Debian 8: new opensc packages.
New packages are available:
  Debian 8: opensc 0.16.0-3+deb8u2

Fedora 31: new opensc packages.
New packages are available:
  Fedora 31: opensc 0.20.0-3.fc31
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