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Vigil@nce - libXfont: three vulnerabilities of BDF

April 2015 by Vigil@nce

This bulletin was written by Vigil@nce : http://vigilance.fr/offer

SYNTHESIS OF THE VULNERABILITY

An attacker can use several vulnerabilities of BDF of libXfont.
Impacted products: Debian, Fedora, MBS, OpenBSD, openSUSE, Ubuntu,
Unix (platform), XOrg Bundle

Severity: 2/4

Creation date: 17/03/2015

DESCRIPTION OF THE VULNERABILITY

Several vulnerabilities were announced in libXfont.

An attacker can generate an integer overflow in bdfReadProperties,
in order to trigger a denial of service, and possibly to execute
code. [severity:2/4; CVE-2015-1802]

An attacker can force a read at an invalid address in
bdfReadCharacters, in order to trigger a denial of service.
[severity:1/4; CVE-2015-1803]

An attacker can generate an integer overflow in bdfReadCharacters,
in order to trigger a denial of service, and possibly to execute
code. [severity:2/4; CVE-2015-1804]

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/libXfont-three-vulnerabilities-of-BDF-16405


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