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Vulnerability of FriBidi: buffer overflow via Unicode Isolate Directional Characters

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via Unicode Isolate Directional Characters of FriBidi, in order to trigger a denial of service, and possibly to run code.
Impacted systems: Debian, Fedora, RHEL, Ubuntu.
Severity of this alert: 3/4.
Creation date: 08/11/2019.
Références of this alert: CVE-2019-18397, DSA-4561-1, FEDORA-2019-533a72fec5, FEDORA-2019-7075bc4ff8, RHSA-2019:4326-01, RHSA-2019:4361-01, USN-4179-1, VIGILANCE-VUL-30809.

Description of the vulnerability 

An attacker can trigger a buffer overflow via Unicode Isolate Directional Charac...
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This threat note impacts software or systems such as Debian, Fedora, RHEL, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity note is important.

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

An attacker with a expert ability can exploit this vulnerability note.

Solutions for this threat 

Fixes for this vulnerability are not yet public.
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