Medium
Security advisory
The Wave_read._read_fmt_chunk function in Lib/wave.py in Python through 3.6.4 does not ensure a nonzero channel value, which allows attackers to cause a denial of service (divide-by-zero and exception) via a crafted wav format audio file. NOTE: the vendor disputes this issue because Python applications "need to be prepared to handle a wide variety of exceptions.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-18207
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:34 UTC · Revision 1
Source evidence
The Wave_read._read_fmt_chunk function in Lib/wave.py in Python through 3.6.4 does not ensure a nonzero channel value, which allows attackers to cause a denial of service (divide-by-zero and exception) via a crafted wav format audio file. NOTE: the vendor disputes this issue because Python applications "need to be prepared to handle a wide variety of exceptions.
osv:CVE-2017-18207
Complete source record
{
"id": "3024185b2ace875f3e6a0396e256091ba57d813fbd083181142423747c36c5b6",
"url": "https://osv.dev/vulnerability/CVE-2017-18207",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-18207",
"summary": "The Wave_read._read_fmt_chunk function in Lib/wave.py in Python through 3.6.4 does not ensure a nonzero channel value, which allows attackers to cause a denial of service (divide-by-zero and exception) via a crafted wav format audio file. NOTE: the vendor disputes this issue because Python applications \"need to be prepared to handle a wide variety of exceptions.",
"evidence": "osv:CVE-2017-18207",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2017-18207",
"aliases": [
"CVE-2017-18207"
],
"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://github.com/python/cpython",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "d48ecebad5ac78a1783e09b0d32c211d9754edf4"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*",
"range": [
{
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},
{
"last_affected": "3.6.4"
}
],
"source": "CPE_RANGE"
}
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}
}
],
"versions": [
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"v1.5.2a2",
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"v1.5.1",
"v1.5",
"v1.5b2",
"v1.5b1",
"v1.5a4",
"v1.5a3",
"v1.5a2",
"v1.5a1",
"v1.4",
"v1.4b3",
"v1.4b2",
"v1.4b1",
"v1.3",
"v1.3b1",
"v1.2",
"v1.2b4",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-18207.json"
}
}
],
"modified": "2026-10-24T10:30:55.185856247Z",
"provider": "osv",
"references": [
"https://bugs.python.org/issue32056"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2017-18207",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 438354,
"published_at": "2018-03-01T05:29:00.227+00:00"
}