An Invalid Address dereference was discovered in TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c in LibTIFF 4.0.10, affecting the cpSeparateBufToContigBuf function in tiffcp.c. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted tiff file. This is different from CVE-2018-12900.
[
{
"id": "CVE-2019-7663-286a357a",
"source": "https://gitlab.com/libtiff/libtiff@802d3cbf3043be5dce5317e140ccb1c17a6a2d39",
"digest": {
"line_hashes": [
"186767229891473563274791702224467613217",
"19481069840066620359853707821813487969",
"52036967966178718200882280771518880600",
"205253912760579363233619821217339056782",
"65357827389285656138329724700151139238",
"316004082998730054425576374731708826911",
"291094780492294955417275808369610628831",
"88395608207003517829085251503399108020",
"241257191188706293250932588388811400347"
],
"threshold": 0.9
},
"signature_version": "v1",
"target": {
"file": "libtiff/tif_dirwrite.c"
},
"signature_type": "Line",
"deprecated": false
},
{
"id": "CVE-2019-7663-d9d4ebe4",
"source": "https://gitlab.com/libtiff/libtiff@802d3cbf3043be5dce5317e140ccb1c17a6a2d39",
"digest": {
"length": 1388.0,
"function_hash": "83226123827981840915355884833144387677"
},
"signature_version": "v1",
"target": {
"function": "TIFFWriteDirectoryTagTransferfunction",
"file": "libtiff/tif_dirwrite.c"
},
"signature_type": "Function",
"deprecated": false
}
]