The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of OpenSC: use after free via sc_pkcs15_decode_prkdf_entry

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via sc_pkcs15_decode_prkdf_entry() of OpenSC, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Fedora.
Severity of this weakness: 2/4.
Creation date: 27/01/2020.
Références of this bulletin: CVE-2019-19480, FEDORA-2020-3c93790abe, VIGILANCE-VUL-31434.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via sc_pkcs15_decode_prkdf_entry() of OpenSC, in order to trigger a denial of service, and possibly to run code.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This security alert impacts software or systems such as Fedora.

Our Vigil@nce team determined that the severity of this security 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 security announce.

Solutions for this threat 

Fedora 31: new opensc packages.
New packages are available:
  Fedora 31: opensc 0.20.0-3.fc31
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides software vulnerabilities alerts. The Vigil@nce vulnerability database contains several thousand vulnerabilities.