Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-7663
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:21 UTC · Revision 1
Source evidence
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.
osv:CVE-2019-7663
Complete source record
{
"id": "cbbbc8b4a4ab63d179c16882259b493eb82dded17b500b996ab739945e0fcfd9",
"url": "https://osv.dev/vulnerability/CVE-2019-7663",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-7663",
"summary": "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.",
"evidence": "osv:CVE-2019-7663",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2019-7663",
"aliases": [
"CVE-2019-7663"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://gitlab.com/libtiff/libtiff",
"type": "GIT",
"events": [
{
"introduced": "b8eac98dd0849c3f888518ce5cecc020f8b2991c"
},
{
"last_affected": "b8eac98dd0849c3f888518ce5cecc020f8b2991c"
},
{
"fixed": "802d3cbf3043be5dce5317e140ccb1c17a6a2d39"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:libtiff:libtiff:4.0.10:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.10"
},
{
"last_affected": "4.0.10"
}
],
"source": "CPE_STRING"
},
{
"range": [
{
"fixed": "802d3cbf3043be5dce5317e140ccb1c17a6a2d39"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"4.0.10",
"v4.0.10"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-7663.json",
"vanir_signatures": [
{
"id": "CVE-2019-7663-286a357a",
"digest": {
"threshold": 0.9,
"line_hashes": [
"186767229891473563274791702224467613217",
"19481069840066620359853707821813487969",
"52036967966178718200882280771518880600",
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"316004082998730054425576374731708826911",
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]
},
"source": "https://gitlab.com/libtiff/libtiff@802d3cbf3043be5dce5317e140ccb1c17a6a2d39",
"target": {
"file": "libtiff/tif_dirwrite.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2019-7663-d9d4ebe4",
"digest": {
"length": 1388,
"function_hash": "83226123827981840915355884833144387677"
},
"source": "https://gitlab.com/libtiff/libtiff@802d3cbf3043be5dce5317e140ccb1c17a6a2d39",
"target": {
"file": "libtiff/tif_dirwrite.c",
"function": "TIFFWriteDirectoryTagTransferfunction"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-24T14:19:42Z"
}
}
],
"modified": "2026-10-24T14:19:42.596221802Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2019/02/msg00026.html",
"https://security.gentoo.org/glsa/202003-25",
"https://usn.ubuntu.com/3906-1/",
"https://usn.ubuntu.com/3906-2/",
"https://www.debian.org/security/2020/dsa-4670",
"https://gitlab.com/libtiff/libtiff/commit/802d3cbf3043be5dce5317e140ccb1c17a6a2d39"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "12.04"
},
{
"last_affected": "12.04"
},
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
},
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
},
{
"introduced": "18.10"
},
{
"last_affected": "18.10"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:libtiff:libtiff:4.0.10:*:*:*:*:*:*:*"
],
"vendor_product": "libtiff:libtiff",
"extracted_events": [
{
"range": [
{
"introduced": "4.0.10"
},
{
"last_affected": "4.0.10"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*"
],
"vendor_product": "opensuse:leap",
"extracted_events": [
{
"range": [
{
"introduced": "15.0"
},
{
"last_affected": "15.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-7663",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 443465,
"published_at": "2019-02-09T16:29:00.313+00:00"
}