Denial of Service Vulnerability in GraphicsMagick 1.3.31's ReadDIBImage Function

CVE-2018-20189 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:N/A:P

In GraphicsMagick 1.3.31, the ReadDIBImage function of coders/dib.c has a vulnerability allowing a crash and denial of service via a dib file that is crafted to appear with direct pixel values and also colormapping (which is not available beyond 8-bits/sample), and therefore lacks indexes initialization.

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