CVE-2017-11613

Description

In LibTIFF 4.0.8, there is a denial of service vulnerability in the TIFFOpen function. A crafted input will lead to a denial of service attack. During the TIFFOpen process, td_imagelength is not checked. The value of td_imagelength can be directly controlled by an input file. In the ChopUpSingleUncompressedStrip function, the _TIFFCheckMalloc function is called based on td_imagelength. If we set the value of td_imagelength close to the amount of system memory, it will hang the system or trigger the OOM killer.

How to fix CVE-2017-11613

To remediate CVE-2017-11613, upgrade the affected package to a fixed version below.

—upgrade to 4.0.9-r6 or later
—upgrade to 4.0.9-5 or later
—upgrade to 4.0.2-6+deb7u21 or later
—upgrade to 4.0.3-12.3+deb8u6 or later
—upgrade to 4.0.8-2+deb9u4 or later

Is CVE-2017-11613 being exploited?

Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.

Affected packages (5)

from 0, < 4.0.9-r6
from 0, < 4.0.9-5
from 0, < 4.0.2-6+deb7u21
from 0, < 4.0.3-12.3+deb8u6
from 0, < 4.0.8-2+deb9u4

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM6.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H