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Fencer Vulns
high 7.5

CVE-2019-9674 json

Lib/zipfile.py in Python through 3.7.2 allows remote attackers to cause a denial of service (resource consumption) via a ZIP bomb.

published 2020-02-04 6 y ago modified 2026-10-14 25 d ago also EUVD-2019-19040

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.6%
EPSS 5.6% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

Lib/zipfile.py in Python through 3.7.2 allows remote attackers to cause a denial of service (resource consumption) via a ZIP bomb.

Patch / fix

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • python2.7 Ubuntu 16.04 LTS 2.7.12-1ubuntu0~16.04.12
  • python2.7 Ubuntu 18.04 LTS 2.7.17-1~18.04ubuntu1.1
  • python2.7 Ubuntu 20.04 LTS 2.7.18-1~20.04.1
  • python3.5 Ubuntu 16.04 LTS 3.5.2-2ubuntu0~16.04.11
  • python3.6 Ubuntu 18.04 LTS 3.6.9-1~18.04ubuntu1.1
  • python2.7 Ubuntu Pro 14.04 LTS 2.7.6-8ubuntu0.6+esm6
  • python2.7 Ubuntu Pro 22.04 LTS 2.7.18-13ubuntu1.5+esm3
  • python3.4 Ubuntu Pro 14.04 LTS 3.4.3-1ubuntu1~14.04.7+esm7

ubuntu advisories UBUNTU-CVE-2019-9674

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • python SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +14 more 2.7.17-28.42.1
  • python-base SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +17 more 2.7.17-28.42.1
  • python-rpm-macros SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +16 more 20200207.5feb6c1-3.19.1
  • shared-python-startup SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +14 more 0.1-1.3.1
  • python SLE Module for Python 2 15 SP1, SLE Module for Desktop Applications 15 SP1, SLE Module for Basesystem 15 SP1 2.7.17-7.38.1
  • python-base SLE Module for Python 2 15 SP1, SLE Module for Basesystem 15 SP1 2.7.17-7.38.1
  • python3 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +17 more 3.4.10-25.45.1
  • python3-base SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +17 more 3.4.10-25.45.1

suse advisories SUSE-SU-2020:1524-1SUSE-SU-2020:1339-1SUSE-SU-2020:0854-1SUSE-SU-2020:0557-1SUSE-SU-2020:0510-1SUSE-SU-2020:0467-1

  • python openSUSE Tumbleweed 2.7.18-8.1
  • python36 openSUSE Tumbleweed 3.6.15-1.1
  • python openSUSE Leap 15.1 2.7.17-lp151.10.17.1
  • python-base openSUSE Leap 15.1 2.7.17-lp151.10.17.1
  • python3 openSUSE Leap 15.1 3.6.10-lp151.6.11.1
  • python3-base openSUSE Leap 15.1 3.6.10-lp151.6.11.1

opensuse advisories openSUSE-SU-2024:11202-1openSUSE-SU-2024:11284-1openSUSE-SU-2020:0696-1openSUSE-SU-2020:0274-1

  • python2 CBL-Mariner 2.0 2.7.18-8

azure linux advisories AZL-6826

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-9674 updated cvss 4.2

python: Nested zip file (Zip bomb) vulnerability in Lib/zipfile.py

  • Red Hat Enterprise Linux 5 python Red Hat Enterprise Linux 6 python, tkinter, python-libs, python-test, python-tools Red Hat Enterprise Linux 7 python, python3, tkinter, python-libs, python-test, python-tools, +4 more Red Hat Enterprise Linux 8 scipy, python2, python3, python36, python-nose, python-wheel, +30 more Red Hat Software Collections python27-python, python27-tkinter, rh-python36-python, python27-python-libs, python27-python-test, python27-python-tools, +4 more
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-348-10 updated cvss 7.5

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
31 d ago

Exploit prediction

5.64% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.