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Fencer Vulns
critical 9.1

CVE-2019-9948 in the critical feed json

urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechan…

published 2019-03-23 7 y ago modified 2026-10-14 25 d ago also EUVD-2019-19302

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
11.8%
EPSS 11.8% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechanisms that blacklist file: URIs, as demonstrated by triggering a urllib.urlopen('local_file:///etc/passwd') call.

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 Debian 11 2.7.16-2

debian advisories DEBIAN-CVE-2019-9948

  • python2.7 Ubuntu 16.04 LTS 2.7.12-1ubuntu0~16.04.8
  • python2.7 Ubuntu 18.04 LTS 2.7.15-4ubuntu4~18.04.1
  • python3.5 Ubuntu 16.04 LTS 3.5.2-2ubuntu0~16.04.8
  • python3.6 Ubuntu 18.04 LTS 3.6.8-1~18.04.2
  • python2.7 Ubuntu Pro 14.04 LTS 2.7.6-8ubuntu0.6+esm2
  • python3.4 Ubuntu Pro 14.04 LTS 3.4.3-1ubuntu1~14.04.7+esm2
  • python3.5 Ubuntu Pro 14.04 LTS 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1

ubuntu advisories UBUNTU-CVE-2019-9948

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

  • pytz RHEL 8 2017.2-12.module+el8.1.0+3111+de3f2d8e
  • babel RHEL 8 2.5.1-9.module+el8.1.0+3111+de3f2d8e
  • numpy RHEL 8 1:1.14.2-13.module+el8.1.0+3323+7ac3e00f
  • scipy RHEL 8 1.0.0-20.module+el8.1.0+3323+7ac3e00f
  • Cython RHEL 8 0.28.1-7.module+el8.1.0+3111+de3f2d8e
  • pytest RHEL 8 3.4.2-13.module+el8.1.0+3111+de3f2d8e
  • PyYAML RHEL 8 3.12-16.module+el8.1.0+3111+de3f2d8e
  • python2 RHEL 8 2.7.16-12.module+el8.1.0+4148+33a50073

red hat advisories RHSA-2019:3335RHSA-2020:1462RHSA-2020:1346RHSA-2019:3725RHSA-2020:1268RHSA-2019:3520

  • python SLE Module for Python 2 15 SP1, SLE Module for Desktop Applications 15 SP1, SLE Module for Desktop Applications 15 +2 more 2.7.17-7.32.2
  • python-base SLE Module for Python 2 15 SP1, SLE Module for Basesystem 15 SP1, SLE Module for Basesystem 15 2.7.17-7.32.1
  • python SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES for SAP 12 SP2 +11 more 2.7.13-28.26.1
  • python-base SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES for SAP 12 SP2 +14 more 2.7.13-28.26.1
  • python SLE Module for Desktop Applications 15, SLE Module for Basesystem 15 2.7.14-7.11.1
  • python-base SLE Module for Basesystem 15 2.7.14-7.11.1
  • python SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 2.6.9-40.24.1
  • python-base SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 2.6.9-40.24.1

suse advisories SUSE-SU-2020:0234-1SUSE-SU-2019:1439-1SUSE-SU-2019:0972-1SUSE-SU-2019:14018-1

  • python openSUSE Tumbleweed 2.7.18-8.1
  • python openSUSE Leap 15.0 2.7.14-lp150.6.10.1

opensuse advisories openSUSE-SU-2024:11202-1openSUSE-SU-2019:1273-1

  • python2-py AlmaLinux 8 1.5.3-6.module_el8.6.0+2781+fed64c13
  • python2-dns AlmaLinux 8 1.15.0-10.module_el8.6.0+2781+fed64c13
  • python2-idna AlmaLinux 8 2.5-7.module_el8.6.0+2781+fed64c13
  • python2-mock AlmaLinux 8 2.0.0-13.module_el8.6.0+2781+fed64c13
  • python2-pytz AlmaLinux 8 2017.2-12.module_el8.6.0+2781+fed64c13
  • python2-attrs AlmaLinux 8 17.4.0-10.module_el8.6.0+2781+fed64c13
  • python2-Cython AlmaLinux 8 0.28.1-7.module_el8.6.0+2781+fed64c13
  • python2-pluggy AlmaLinux 8 0.6.0-8.module_el8.6.0+2781+fed64c13

almalinux advisories ALSA-2019:3335

  • pytz Rocky Linux 8 2017.2-12.module+el8.5.0+706+735ec4b3
  • pytz Rocky Linux 8 2017.2-12.module+el8.4.0+403+9ae17a31
  • babel Rocky Linux 8 2.5.1-9.module+el8.4.0+403+9ae17a31
  • scipy Rocky Linux 8 1.0.0-20.module+el8.3.0+120+426d8baf
  • Cython Rocky Linux 8 0.28.1-7.module+el8.5.0+706+735ec4b3
  • Cython Rocky Linux 8 0.28.1-7.module+el8.4.0+403+9ae17a31
  • pytest Rocky Linux 8 3.4.2-13.module+el8.5.0+706+735ec4b3
  • pytest Rocky Linux 8 3.4.2-13.module+el8.4.0+403+9ae17a31

rocky linux advisories RLSA-2019:3335

  • python2 Alpine 3.15, Alpine 3.14, Alpine 3.13 +4 more 2.7.16-r1
  • python2 Alpine 3.8, Alpine 3.7 2.7.15-r2
  • python2-tkinter Alpine 3.11, Alpine 3.10 2.7.17-r0

alpine advisories ALPINE-CVE-2019-9948

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2019-9948 updated cvss 7.4

python: Undocumented local_file protocol allows remote attackers to bypass protection mechanisms

  • Red Hat Enterprise Linux 5 python Red Hat Enterprise Linux 6 python, tkinter, python-libs, python-test, python-tools Red Hat Software Collections rh-python35-python, rh-python35-python-libs, rh-python35-python-test, rh-python35-python-tools, rh-python35-python-tkinter
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Ansible Tower 3.4 for RHEL 7 Server ansible-tower-34/ansible-tower-memcached 1.4.15-28, ansible-tower-35/ansible-tower-memcached 1.4.15-28, ansible-tower-37/ansible-tower-memcached-rhel7 1.4.15-28
    fixed: vendor fix RHBA-2020:0547
  • Red Hat Enterprise Linux AppStream (v. 8) python3-idle 3.6.8-15.1.el8, python3-test 3.6.8-15.1.el8, platform-python 3.6.8-15.1.el8, python3-tkinter 3.6.8-15.1.el8, babel 2.5.1-9.module+el8.1.0+3111+de3f2d8e, pytz 2017.2-12.module+el8.1.0+3111+de3f2d8e, +88 more
    fixed: vendor fix RHSA-2019:3335
  • Red Hat Enterprise Linux BaseOS (v. 8) python3 3.6.8-15.1.el8, python3-libs 3.6.8-15.1.el8, python3-test 3.6.8-15.1.el8, platform-python 3.6.8-15.1.el8
    fixed: vendor fix RHSA-2019:3520
  • Red Hat Enterprise Linux Client (v. 7) python 2.7.5-86.el7, python-libs 2.7.5-86.el7 Red Hat Enterprise Linux Client Optional (v. 7) tkinter 2.7.5-86.el7, python-test 2.7.5-86.el7, python-tools 2.7.5-86.el7 Red Hat Enterprise Linux ComputeNode (v. 7) python 2.7.5-86.el7, python-libs 2.7.5-86.el7
    fixed: vendor fix RHSA-2019:2030
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) python 2.7.5-74.el7_5, python-libs 2.7.5-74.el7_5
    fixed: vendor fix RHSA-2020:1268
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) python 2.7.5-83.el7_6, python-libs 2.7.5-83.el7_6
    fixed: vendor fix RHSA-2020:1462
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) tkinter 2.7.5-86.el7, python-test 2.7.5-86.el7, python-tools 2.7.5-86.el7
    fixed: vendor fix RHSA-2019:2030
show 16 more
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) tkinter 2.7.5-74.el7_5, python-test 2.7.5-74.el7_5, python-tools 2.7.5-74.el7_5
    fixed: vendor fix RHSA-2020:1268
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) tkinter 2.7.5-83.el7_6, python-test 2.7.5-83.el7_6, python-tools 2.7.5-83.el7_6 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) python 2.7.5-83.el7_6, python-libs 2.7.5-83.el7_6 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) tkinter 2.7.5-83.el7_6, python-test 2.7.5-83.el7_6, python-tools 2.7.5-83.el7_6
    fixed: vendor fix RHSA-2020:1462
  • Red Hat Enterprise Linux Server (v. 7) python 2.7.5-86.el7, python-libs 2.7.5-86.el7
    fixed: vendor fix RHSA-2019:2030
  • Red Hat Enterprise Linux Server AUS (v. 7.4) python 2.7.5-63.el7_4, python-libs 2.7.5-63.el7_4 Red Hat Enterprise Linux Server E4S (v. 7.4) python 2.7.5-63.el7_4, python-libs 2.7.5-63.el7_4
    fixed: vendor fix RHSA-2020:1346
  • Red Hat Enterprise Linux Server EUS (v. 7.5) python 2.7.5-74.el7_5, python-libs 2.7.5-74.el7_5
    fixed: vendor fix RHSA-2020:1268
  • Red Hat Enterprise Linux Server EUS (v. 7.6) python 2.7.5-83.el7_6, python-libs 2.7.5-83.el7_6
    fixed: vendor fix RHSA-2020:1462
  • Red Hat Enterprise Linux Server Optional (v. 7) tkinter 2.7.5-86.el7, python-test 2.7.5-86.el7, python-tools 2.7.5-86.el7
    fixed: vendor fix RHSA-2019:2030
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) tkinter 2.7.5-63.el7_4, python-test 2.7.5-63.el7_4, python-tools 2.7.5-63.el7_4 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) tkinter 2.7.5-63.el7_4, python-test 2.7.5-63.el7_4, python-tools 2.7.5-63.el7_4
    fixed: vendor fix RHSA-2020:1346
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.5) tkinter 2.7.5-74.el7_5, python-test 2.7.5-74.el7_5, python-tools 2.7.5-74.el7_5
    fixed: vendor fix RHSA-2020:1268
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) tkinter 2.7.5-83.el7_6, python-test 2.7.5-83.el7_6, python-tools 2.7.5-83.el7_6
    fixed: vendor fix RHSA-2020:1462
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) tkinter 2.7.5-63.el7_4, python-test 2.7.5-63.el7_4, python-tools 2.7.5-63.el7_4 Red Hat Enterprise Linux Server TUS (v. 7.4) python 2.7.5-63.el7_4, python-libs 2.7.5-63.el7_4
    fixed: vendor fix RHSA-2020:1346
  • Red Hat Enterprise Linux Workstation (v. 7) python 2.7.5-86.el7, python-libs 2.7.5-86.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) tkinter 2.7.5-86.el7, python-test 2.7.5-86.el7, python-tools 2.7.5-86.el7
    fixed: vendor fix RHSA-2019:2030
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) python27-python 2.7.16-6.el6, python27-tkinter 2.7.16-6.el6, rh-python36-python 3.6.9-2.el6, python27-python-libs 2.7.16-6.el6, python27-python-test 2.7.16-6.el6, python27-python-tools 2.7.16-6.el6, +4 more Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) python27-python 2.7.16-6.el7, python27-tkinter 2.7.16-6.el7, rh-python36-python 3.6.9-2.el7, python27-python-libs 2.7.16-6.el7, python27-python-test 2.7.16-6.el7, python27-python-tools 2.7.16-6.el7, +4 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) python27-python 2.7.16-6.el7, python27-tkinter 2.7.16-6.el7, python27-python-libs 2.7.16-6.el7, python27-python-test 2.7.16-6.el7, python27-python-tools 2.7.16-6.el7 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) python27-python 2.7.16-6.el7, python27-tkinter 2.7.16-6.el7, rh-python36-python 3.6.9-2.el7, python27-python-libs 2.7.16-6.el7, python27-python-test 2.7.16-6.el7, python27-python-tools 2.7.16-6.el7, +4 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) python27-python 2.7.16-6.el7, python27-tkinter 2.7.16-6.el7, rh-python36-python 3.6.9-2.el7, python27-python-libs 2.7.16-6.el7, python27-python-test 2.7.16-6.el7, python27-python-tools 2.7.16-6.el7, +4 more
    fixed: vendor fix RHSA-2019:1700
  • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-python36-python 3.6.9-2.el7, rh-python36-python-libs 3.6.9-2.el7, rh-python36-python-test 3.6.9-2.el7, rh-python36-python-tools 3.6.9-2.el7, rh-python36-python-tkinter 3.6.9-2.el7
    fixed: vendor fix RHSA-2019:3725
  • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) python27-python 2.7.16-6.el6, python27-tkinter 2.7.16-6.el6, rh-python36-python 3.6.9-2.el6, python27-python-libs 2.7.16-6.el6, python27-python-test 2.7.16-6.el6, python27-python-tools 2.7.16-6.el6, +4 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) python27-python 2.7.16-6.el7, python27-tkinter 2.7.16-6.el7, rh-python36-python 3.6.9-2.el7, python27-python-libs 2.7.16-6.el7, python27-python-test 2.7.16-6.el7, python27-python-tools 2.7.16-6.el7, +4 more
    fixed: vendor fix RHSA-2019:1700
  • Red Hat Enterprise Linux 7 python3, python3-idle, python3-libs, python3-test, python3-tkinter Red Hat Enterprise Linux 8 scipy, python36, python-nose, python-wheel, python3-bson, python3-nose, +19 more
    not affected: vulnerable code not present

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 9.1

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
no
Technical impact
partial
Assessed
32 d ago

Exploit prediction

11.84% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.python.org https://bugs.python.org/issue35907 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:P/A:N

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-22 Improper Limitation of a Pathname to a Restricted Directory

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.