Actu
Vigil@nce - LibTIFF: buffer overflow of NeXTDecode
March 2016 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can generate a buffer overflow in NeXTDecode of
libtiff5, in order to trigger a denial of service, and possibly to
run code.
Impacted products: Debian, LibTIFF, Ubuntu.
Severity: 2/4.
Creation date: 25/01/2016.
DESCRIPTION OF THE VULNERABILITY
The library libtiff handles images in the TIFF format.
The routine TIFFReadContigTileData allocates a buffer wich is used
by the routine NeXTDecode. However, This last routine may write
data from the image file after the end of this buffer.
An attacker can therefore generate a buffer overflow in NeXTDecode
of libtiff5, in order to trigger a denial of service, and possibly
to run code.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/LibTIFF-buffer-overflow-of-NeXTDecode-18806
