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Vulnerability of MariaDB Connector/C: use after free via client_mpvio_read_packet

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via client_mpvio_read_packet() of MariaDB Connector/C, in order to trigger a denial of service, and possibly to run code.
Vulnerable systems: Fedora, MariaDB ~ precise, openSUSE Leap.
Severity of this threat: 2/4.
Creation date: 19/08/2019.
Références of this weakness: FEDORA-2019-60befaed69, FEDORA-2019-f873e2799f, openSUSE-SU-2019:1913-1, openSUSE-SU-2019:1915-1, VIGILANCE-VUL-30068.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via client_mpvio_read_packet() of MariaDB Connector/C, in order to trigger a denial of service, and possibly to run code.
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This weakness impacts software or systems such as Fedora, MariaDB ~ precise, openSUSE Leap.

Our Vigil@nce team determined that the severity of this vulnerability announce is medium.

The trust level is of type confirmed by the editor, with an origin of intranet client.

An attacker with a expert ability can exploit this threat bulletin.

Solutions for this threat 

MariaDB Connector/C: version 3.1.3.
The version 3.1.3 is fixed:
  https://mariadb.com/downloads/#connectors

Fedora: new mariadb-connector-c packages.
New packages are available:
  Fedora 29: mariadb-connector-c 3.1.3-1.fc29
  Fedora 30: mariadb-connector-c 3.1.3-1.fc30

openSUSE Leap: new mariadb-connector-c packages.
New packages are available:
  openSUSE Leap 15.0: mariadb-connector-c 3.1.2-lp150.10.1
  openSUSE Leap 15.1: mariadb-connector-c 3.1.2-lp151.3.3.1
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