In GammaImage() of /MagickCore/enhance.c, depending on the gamma value, it's possible to trigger a divide-by-zero condition when a crafted input file is processed by ImageMagick. This could lead to an impact to application availability. The patch uses the PerceptibleReciprocal() to prevent the divide-by-zero from occurring. This flaw affects ImageMagick versions prior to ImageMagick 7.0.8-68.
{
"unresolved_ranges": [
{
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"last_affected": "9.0"
}
],
"cpes": [
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"source": "CPE_STRING"
}
]
}{
"extracted_events": [
{
"introduced": "7.0.0-0"
},
{
"fixed": "7.0.8-68"
}
],
"cpe": "cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*",
"source": "CPE_RANGE"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "6.9.10-68"
}
],
"cpe": "cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*",
"source": "CPE_RANGE"
}