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SYNTHESIS OF THE VULNERABILITY

An attacker can use several vulnerabilities of libidn.

Impacted products: Debian, Fedora, openSUSE, openSUSE Leap,
Slackware, Ubuntu.

Severity: 2/4.

Creation date: 25/07/2016.

DESCRIPTION OF THE VULNERABILITY

Several vulnerabilities were announced in libidn.

An attacker can force a read at an invalid address via
idna_to_ascii_4i, in order to trigger a denial of service, or to
obtain sensitive information. [severity:2/4; CVE-2016-6261]

An attacker can force a read at an invalid address via Zero Byte,
in order to trigger a denial of service, or to obtain sensitive
information. [severity:2/4; CVE-2016-6262]

An attacker can trigger a fatal error via UTF-8, in order to
trigger a denial of service. [severity:2/4; CVE-2016-6263]

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/libidn-three-vulnerabilities-20199