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Vigil@nce - X.Org Server: denial of service via PutImage

May 2015 by Vigil@nce

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

SYNTHESIS OF THE VULNERABILITY

An attacker can use the PutImage() function with a null height, in
order to trigger a denial of service of X.Org Server.

 Impacted products: XOrg Bundle
 Severity: 1/4
 Creation date: 27/04/2015

DESCRIPTION OF THE VULNERABILITY

The X.Org Server product implements the server side of the
PutImage() function, which displays an image on the screen.

However, if the image height is zero, a division by zero occurs.

An attacker can therefore use the PutImage() function with a null
height, in order to trigger a denial of service of X.Org Server.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/X-Org-Server-denial-of-service-via-PutImage-16718


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