Critical
Security advisory
Gifsicle gifview 1.89 and older is vulnerable to a use-after-free in the read_gif function resulting potential code execution
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-1000421
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 09:50 UTC · Revision 1
Source evidence
Gifsicle gifview 1.89 and older is vulnerable to a use-after-free in the read_gif function resulting potential code execution
osv:CVE-2017-1000421
Complete source record
{
"id": "8fb9e9413b9ab3afec8981b89f9c622f6a022e7863b8da5c34c418c85ed23a2b",
"url": "https://osv.dev/vulnerability/CVE-2017-1000421",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-1000421",
"summary": "Gifsicle gifview 1.89 and older is vulnerable to a use-after-free in the read_gif function resulting potential code execution",
"evidence": "osv:CVE-2017-1000421",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2017-1000421",
"aliases": [
"CVE-2017-1000421"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/kohler/gifsicle",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "8a9125273aa4f86f55a6c50c0d3baaac6a9e8076"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:lcdf:gifsicle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "1.89"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v1.89",
"v1.88",
"v1.87",
"v1.86",
"v1.85",
"v1.84",
"v1.82",
"v1.81",
"v1.80",
"v1.79",
"v1.78",
"v1.77",
"v1.76",
"v1.75",
"v1.74",
"v1.73",
"v1.72",
"v1.71",
"v1.70",
"v1.69",
"v1.68",
"v1.67",
"v1.66",
"v1.65",
"v1.64",
"v1.63",
"v1.62",
"v1.61",
"v1.60",
"v1.59",
"v1.58",
"v1.57",
"v1.56",
"v1.55",
"v1.54",
"v1.53",
"v1.52",
"v1.51",
"v1.50",
"v1.48",
"v1.47",
"v1.46",
"v1.45",
"v1.44",
"v1.43",
"v1.42",
"v1.40",
"v1.39",
"v1.38",
"v1.37",
"v1.35",
"v1.30",
"v1.26",
"v1.25",
"v1.24",
"v1.22",
"v1.21",
"v1.19",
"v1.18",
"v1.15b",
"v1.14.1",
"v1.11.1",
"v1.11",
"v1.10",
"v1.10b1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-1000421.json"
}
}
],
"modified": "2026-10-20T10:48:07.704633930Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2018/01/msg00006.html",
"https://www.debian.org/security/2018/dsa-4084",
"https://github.com/kohler/gifsicle/issues/114"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
},
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-1000421",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 380078,
"published_at": "2018-01-02T19:29:00.3+00:00"
}