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vulnerability CVE-2016-3622

LibTIFF: denial of service via tiff2rgba

Synthesis of the vulnerability

An attacker can invite the victim to open a malicious image with tiff2rgba of LibTIFF, in order to trigger a denial of service.
Vulnerable products: Debian, LibTIFF, openSUSE, openSUSE Leap, Slackware, Ubuntu.
Severity of this weakness: 2/4.
Consequences of an attack: denial of service on client.
Hacker's origin: document.
Creation date: 07/04/2016.
Références of this bulletin: CVE-2016-3622, DLA-795-1, DSA-3762-1, openSUSE-SU-2016:2525-1, openSUSE-SU-2016:2526-1, openSUSE-SU-2016:2544-1, openSUSE-SU-2016:3035-1, openSUSE-SU-2017:0074-1, SSA:2017-098-01, USN-3212-1, USN-3212-2, VIGILANCE-VUL-19320.

Description of the vulnerability

The LibTIFF product offers the tiff2rgba tool.

However, a malformed TIFF image triggers a division by zero in the fpAcc() function.

An attacker can therefore invite the victim to open a malicious image with tiff2rgba of LibTIFF, in order to trigger a denial of service.
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