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Vigil@nce - LibTIFF: unreachable memory reading via tif_getimage.c
January 2016 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can force a read at an invalid address in
tif_getimage.c of LibTIFF, in order to trigger a denial of service.
Impacted products: LibTIFF.
Severity: 1/4.
Creation date: 28/12/2015.
DESCRIPTION OF THE VULNERABILITY
The LibTIFF library analyzes images in TIFF format.
However, if the "samplesperpixel" field is set to 3 in a TIFF
image, the tif_getimage.c file tries to read an unreachable memory
area, which triggers a fatal error.
An attacker can therefore force a read at an invalid address in
tif_getimage.c of LibTIFF, in order to trigger a denial of service.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/LibTIFF-unreachable-memory-reading-via-tif-getimage-c-18594
