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Vulnerability of OpenSC: buffer overflow via CAC Certificates

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via CAC Certificates of OpenSC, in order to trigger a denial of service, and possibly to run code.
Vulnerable software: Fedora.
Severity of this announce: 2/4.
Creation date: 27/01/2020.
Références of this computer vulnerability: CVE-2019-19481, FEDORA-2020-3c93790abe, VIGILANCE-VUL-31435.

Description of the vulnerability 

An attacker can trigger a buffer overflow via CAC Certificates of OpenSC, 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 Fedora.

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 

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