CVE-2017-18207 — 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

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MEDIUM

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

Published Mar 1, 2018

6.5

MEDIUM

CVSS 3.0

EPSS 1.32%

Description

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.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.32% 0.01323

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01323

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.32% (0.01323)	69.85th	v5 (v2026.06.15)
Sep 20, 2026	1.32% (0.01323)	69.63th	v5 (v2026.06.15)
Jul 20, 2024	0.09% (0.00092)	39.83th	v3 (v2023.03.01)
Jun 12, 2024	0.09% (0.00092)	39.50th	v3 (v2023.03.01)
Mar 7, 2023	0.09% (0.00091)	37.50th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.78% (0.00777)	21.50th	v5 (v2026.06.15)
Apr 14, 2021	0.78% (0.00777)	0.00th	v1

Weaknesses (1)

CWE-369

References (2)

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
vendor-advisoryx_refsource_SUSE
https://bugs.python.org/issue32056
x_refsource_MISCIssue TrackingVendor Advisory

Link	Providers	Tags
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html		vendor-advisoryx_refsource_SUSE
https://bugs.python.org/issue32056		x_refsource_MISCIssue TrackingVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Mar 1, 2018

Updated Aug 5, 2024

Reserved Feb 28, 2018

Link CVE-2017-18207

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2017-18207

Red Hat

Severity n/a

Public date n/a

Links CVE-2017-18207