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CVE-2017-18207· NVD / CVE Program· CNA mitre

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 attacker

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.

MediumCVSS 6.5 · v3.0—No exploit Fix available
Published
Mar 1, 2018
Updated
Jun 16, 2026
EPSS
1.3% · 70th percentile
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Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

Affected systems

VendorProduct
pythonpython

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • python pythonup to 3.6.4 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
openSUSE:Leap 15.1python3before 3.6.10-lp151.6.7.13.6.10-lp151.6.7.1
openSUSE:Leap 15.1python3-basebefore 3.6.10-lp151.6.7.13.6.10-lp151.6.7.1
openSUSE:Tumbleweedpythonbefore 2.7.18-8.12.7.18-8.1
openSUSE:Tumbleweedpython36before 3.6.15-1.13.6.15-1.1
SUSE:Linux Enterprise Desktop 12 SP3pythonbefore 2.7.13-28.6.12.7.13-28.6.1
SUSE:Linux Enterprise Desktop 12 SP3python-basebefore 2.7.13-28.6.12.7.13-28.6.1
SUSE:Linux Enterprise Desktop 12 SP3python3before 3.4.6-25.7.13.4.6-25.7.1
SUSE:Linux Enterprise Desktop 12 SP3python3-basebefore 3.4.6-25.7.13.4.6-25.7.1
SUSE:Linux Enterprise Module for Basesystem 15python3before 3.6.10-3.42.23.6.10-3.42.2
SUSE:Linux Enterprise Module for Basesystem 15python3-basebefore 3.6.10-3.42.23.6.10-3.42.2
SUSE:Linux Enterprise Server 12 SP3python-docbefore 2.7.13-28.6.12.7.13-28.6.1
SUSE:Linux Enterprise Server 12 SP5python36before 3.6.10-4.3.53.6.10-4.3.5
SUSE:Linux Enterprise Server 12 SP5python36-basebefore 3.6.10-4.3.53.6.10-4.3.5
SUSE:Linux Enterprise Software Development Kit 11 SP4pythonbefore 2.6.9-40.6.22.6.9-40.6.2
SUSE:Linux Enterprise Software Development Kit 11 SP4python-basebefore 2.6.9-40.6.22.6.9-40.6.2
SUSE:Linux Enterprise Software Development Kit 11 SP4python-docbefore 2.6-8.40.6.22.6-8.40.6.2

Same product

python: all records

Other highest-scoring records for the same primary product.

  • CVE-2016-5636Integer overflow in the get_data function in zipimport.c in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 all
    47Plan
  • CVE-2007-4559Directory traversal vulnerability in the (1) extract and (2) extractall functions in the tarfile module in Python allows user-assisted remot
    47Plan
  • CVE-2021-3177Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to remote code execution in certain Pyth
    46Plan
  • CVE-2014-4650The CGIHTTPServer module in Python 2.7.5 and 3.3.4 does not properly handle URLs in which URL encoding is used for path separators, which al
    46Plan
  • CVE-2018-1000802Python Software Foundation Python (CPython) version 2.7 contains a CWE-77: Improper Neutralization of Special Elements used in a Command ('C
    45Plan
  • CVE-2020-27619In Python 3 through 3.9.0, the Lib/test/multibytecodec_support.py CJK codec tests call eval() on content retrieved via HTTP.
    42Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
opensuse:python2.7.18-8.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:python33.6.10-lp151.6.7.1 · openSUSE:Leap 15.1Package registry (OSV)
opensuse:python3-base3.6.10-lp151.6.7.1 · openSUSE:Leap 15.1Package registry (OSV)
opensuse:python363.6.15-1.1 · openSUSE:TumbleweedPackage registry (OSV)
suse:python2.6.9-40.6.2 · SUSE:Linux Enterprise Software Development Kit 11 SP4Package registry (OSV)
suse:python-base2.6.9-40.6.2 · SUSE:Linux Enterprise Software Development Kit 11 SP4Package registry (OSV)
suse:python-doc2.6-8.40.6.2 · SUSE:Linux Enterprise Software Development Kit 11 SP4Package registry (OSV)
suse:python33.4.6-25.7.1 · SUSE:Linux Enterprise Desktop 12 SP3Package registry (OSV)
suse:python3-base3.4.6-25.7.1 · SUSE:Linux Enterprise Desktop 12 SP3Package registry (OSV)
suse:python363.6.10-4.3.5 · SUSE:Linux Enterprise Server 12 SP5Package registry (OSV)
suse:python36-base3.6.10-4.3.5 · SUSE:Linux Enterprise Server 12 SP5Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-369 · Divide By Zero

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records