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Fencer Vulns
medium 5.3

CVE-2019-9636 json

Python 2.7.x through 2.7.16 and 3.x through 3.7.2 is affected by: Improper Handling of Unicode Encoding (with an incorrect netloc) during N…

published 2019-03-08 7 y ago modified 2026-10-14 26 d ago also EUVD-2019-19005

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
7.7%
EPSS 7.7% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

Python 2.7.x through 2.7.16 and 3.x through 3.7.2 is affected by: Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization. The impact is: Information disclosure (credentials, cookies, etc. that are cached against a given hostname). The components are: urllib.parse.urlsplit, urllib.parse.urlparse. The attack vector is: A specially crafted URL could be incorrectly parsed to locate cookies or authentication data and send that information to a different host than when parsed correctly. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.7, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.3, v3.7.3rc1, v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.

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-2019-9636

  • 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-2019-9636

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+el8.0.0+2961+596d0223
  • babel RHEL 8 2.5.1-9.module+el8.0.0+2961+596d0223
  • numpy RHEL 8 1:1.14.2-10.module+el8.0.0+2961+596d0223
  • scipy RHEL 8 1.0.0-19.module+el8.0.0+2961+596d0223
  • Cython RHEL 8 0.28.1-7.module+el8.0.0+2961+596d0223
  • pytest RHEL 8 3.4.2-13.module+el8.0.0+2961+596d0223
  • PyYAML RHEL 8 3.12-16.module+el8.0.0+2961+596d0223
  • python2 RHEL 8 2.7.15-22.module+el8.0.0+2961+596d0223

red hat advisories RHSA-2019:0981RHSA-2019:3170RHSA-2019:2980RHSA-2019:1467RHSA-2019:0765RHSA-2019:0902

  • python36 SLES for SAP 12 SP5, SLES 12 SP5 3.6.10-4.3.5
  • python36-base SLES for SAP 12 SP5, SLES 12 SP5 3.6.10-4.3.5
  • 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
  • python3 SLE Module for Basesystem 15 SP1, SLE Module for Basesystem 15 3.6.10-3.42.2
  • python3-base SLE Module for Development Tools 15 SP1, SLE Module for Development Tools 15, SLE Module for Basesystem 15 SP1 +1 more 3.6.10-3.42.2
  • 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

suse advisories SUSE-SU-2020:0302-1SUSE-SU-2020:0234-1SUSE-SU-2019:14246-1SUSE-SU-2020:0114-1SUSE-SU-2019:1439-1SUSE-SU-2019:0972-1

  • python openSUSE Tumbleweed 2.7.18-8.1
  • python36 openSUSE Tumbleweed 3.6.15-1.1
  • python3 openSUSE Leap 15.1 3.6.10-lp151.6.7.1
  • python3-base openSUSE Leap 15.1 3.6.10-lp151.6.7.1
  • python3 openSUSE Leap 15.0 3.6.5-lp150.2.10.1
  • python openSUSE Leap 15.0 2.7.14-lp150.6.10.1

opensuse advisories openSUSE-SU-2024:11202-1openSUSE-SU-2024:11284-1openSUSE-SU-2020:0086-1openSUSE-SU-2019:1282-1openSUSE-SU-2019:1273-1

  • python2-py AlmaLinux 8 1.5.3-6.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
  • python2-pytest AlmaLinux 8 3.4.2-13.module_el8.6.0+2781+fed64c13

almalinux advisories ALSA-2019:0981

  • 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
  • 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
  • PyYAML Rocky Linux 8 3.12-16.module+el8.5.0+706+735ec4b3

rocky linux advisories RLSA-2019:0981

  • 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
  • python3 Alpine 3.8, Alpine 3.7, Alpine 3.6 3.6.8-r0
  • python2-tkinter Alpine 3.11, Alpine 3.10 2.7.17-r0

alpine advisories ALPINE-CVE-2019-9636

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

  • python Arch Linux 3.7.3-1

arch linux advisories AVG-977

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-2019-9636 updated cvss 9.8

python: Information Disclosure due to urlsplit improper NFKC normalization

  • Red Hat Enterprise Linux 5 python
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) python3-idle 3.6.8-2.el8_0, python3-test 3.6.8-2.el8_0, platform-python 3.6.8-2.el8_0, python3-tkinter 3.6.8-2.el8_0, babel 2.5.1-9.module+el8.0.0+2961+596d0223, pytz 2017.2-12.module+el8.0.0+2961+596d0223, +85 more
    fixed: vendor fix RHSA-2019:0981
  • Red Hat Enterprise Linux BaseOS (v. 8) python3 3.6.8-2.el8_0, python3-libs 3.6.8-2.el8_0, python3-test 3.6.8-2.el8_0, platform-python 3.6.8-2.el8_0
    fixed: vendor fix RHSA-2019:0997
  • Red Hat Enterprise Linux Client (v. 7) python 2.7.5-77.el7_6, python-libs 2.7.5-77.el7_6 Red Hat Enterprise Linux Client Optional (v. 7) tkinter 2.7.5-77.el7_6, python-test 2.7.5-77.el7_6, python-tools 2.7.5-77.el7_6 Red Hat Enterprise Linux ComputeNode (v. 7) python 2.7.5-77.el7_6, python-libs 2.7.5-77.el7_6
    fixed: vendor fix RHSA-2019:0710
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) python 2.7.5-70.el7_5, python-libs 2.7.5-70.el7_5
    fixed: vendor fix RHSA-2019:2980
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) tkinter 2.7.5-77.el7_6, python-test 2.7.5-77.el7_6, python-tools 2.7.5-77.el7_6
    fixed: vendor fix RHSA-2019:0710
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) tkinter 2.7.5-70.el7_5, python-test 2.7.5-70.el7_5, python-tools 2.7.5-70.el7_5
    fixed: vendor fix RHSA-2019:2980
  • Red Hat Enterprise Linux Desktop (v. 6) python 2.6.6-68.el6_10, tkinter 2.6.6-68.el6_10, python-libs 2.6.6-68.el6_10 Red Hat Enterprise Linux Desktop Optional (v. 6) python-test 2.6.6-68.el6_10, python-tools 2.6.6-68.el6_10
    fixed: vendor fix RHSA-2019:1467
show 16 more
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) python 2.7.5-77.el7_6, python-libs 2.7.5-77.el7_6 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) tkinter 2.7.5-77.el7_6, python-test 2.7.5-77.el7_6, python-tools 2.7.5-77.el7_6
    fixed: vendor fix RHSA-2019:0710
  • Red Hat Enterprise Linux HPC Node (v. 6) python 2.6.6-68.el6_10, python-libs 2.6.6-68.el6_10 Red Hat Enterprise Linux HPC Node Optional (v. 6) tkinter 2.6.6-68.el6_10, python-test 2.6.6-68.el6_10, python-tools 2.6.6-68.el6_10 Red Hat Enterprise Linux Server (v. 6) python 2.6.6-68.el6_10, tkinter 2.6.6-68.el6_10, python-libs 2.6.6-68.el6_10
    fixed: vendor fix RHSA-2019:1467
  • Red Hat Enterprise Linux Server (v. 7) python 2.7.5-77.el7_6, python-libs 2.7.5-77.el7_6
    fixed: vendor fix RHSA-2019:0710
  • Red Hat Enterprise Linux Server AUS (v. 7.4) python 2.7.5-59.el7_4, python-libs 2.7.5-59.el7_4 Red Hat Enterprise Linux Server E4S (v. 7.4) python 2.7.5-59.el7_4, python-libs 2.7.5-59.el7_4
    fixed: vendor fix RHSA-2019:3170
  • Red Hat Enterprise Linux Server EUS (v. 7.5) python 2.7.5-70.el7_5, python-libs 2.7.5-70.el7_5
    fixed: vendor fix RHSA-2019:2980
  • Red Hat Enterprise Linux Server Optional (v. 6) tkinter 2.6.6-68.el6_10, python-test 2.6.6-68.el6_10, python-tools 2.6.6-68.el6_10
    fixed: vendor fix RHSA-2019:1467
  • Red Hat Enterprise Linux Server Optional (v. 7) tkinter 2.7.5-77.el7_6, python-test 2.7.5-77.el7_6, python-tools 2.7.5-77.el7_6
    fixed: vendor fix RHSA-2019:0710
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) tkinter 2.7.5-59.el7_4, python-test 2.7.5-59.el7_4, python-tools 2.7.5-59.el7_4 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) tkinter 2.7.5-59.el7_4, python-test 2.7.5-59.el7_4, python-tools 2.7.5-59.el7_4
    fixed: vendor fix RHSA-2019:3170
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.5) tkinter 2.7.5-70.el7_5, python-test 2.7.5-70.el7_5, python-tools 2.7.5-70.el7_5
    fixed: vendor fix RHSA-2019:2980
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) tkinter 2.7.5-59.el7_4, python-test 2.7.5-59.el7_4, python-tools 2.7.5-59.el7_4 Red Hat Enterprise Linux Server TUS (v. 7.4) python 2.7.5-59.el7_4, python-libs 2.7.5-59.el7_4
    fixed: vendor fix RHSA-2019:3170
  • Red Hat Enterprise Linux Workstation (v. 6) python 2.6.6-68.el6_10, tkinter 2.6.6-68.el6_10, python-libs 2.6.6-68.el6_10
    fixed: vendor fix RHSA-2019:1467
  • Red Hat Enterprise Linux Workstation (v. 7) python 2.7.5-77.el7_6, python-libs 2.7.5-77.el7_6
    fixed: vendor fix RHSA-2019:0710
  • Red Hat Enterprise Linux Workstation Optional (v. 6) python-test 2.6.6-68.el6_10, python-tools 2.6.6-68.el6_10
    fixed: vendor fix RHSA-2019:1467
  • Red Hat Enterprise Linux Workstation Optional (v. 7) tkinter 2.7.5-77.el7_6, python-test 2.7.5-77.el7_6, python-tools 2.7.5-77.el7_6
    fixed: vendor fix RHSA-2019:0710
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) python27-python 2.7.13-4.el6, python27-tkinter 2.7.13-4.el6, rh-python36-python 3.6.3-4.el6, rh-python35-python 3.5.1-12.el6, python27-python-libs 2.7.13-4.el6, python27-python-test 2.7.13-4.el6, +9 more Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) python27-python 2.7.13-6.el7, python27-tkinter 2.7.13-6.el7, rh-python36-python 3.6.3-7.el7, rh-python35-python 3.5.1-12.el7, python27-python-libs 2.7.13-6.el7, python27-python-test 2.7.13-6.el7, +9 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) python27-python 2.7.13-6.el7, python27-tkinter 2.7.13-6.el7, rh-python36-python 3.6.3-7.el7, rh-python35-python 3.5.1-12.el7, python27-python-libs 2.7.13-6.el7, python27-python-test 2.7.13-6.el7, +9 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) python27-python 2.7.13-6.el7, python27-tkinter 2.7.13-6.el7, rh-python36-python 3.6.3-7.el7, rh-python35-python 3.5.1-12.el7, python27-python-libs 2.7.13-6.el7, python27-python-test 2.7.13-6.el7, +9 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) python27-python 2.7.13-6.el7, python27-tkinter 2.7.13-6.el7, rh-python36-python 3.6.3-7.el7, rh-python35-python 3.5.1-12.el7, python27-python-libs 2.7.13-6.el7, python27-python-test 2.7.13-6.el7, +9 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) python27-python 2.7.13-4.el6, python27-tkinter 2.7.13-4.el6, rh-python36-python 3.6.3-4.el6, rh-python35-python 3.5.1-12.el6, python27-python-libs 2.7.13-4.el6, python27-python-test 2.7.13-4.el6, +9 more
    +1 more products
    Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) python27-python 2.7.13-6.el7, python27-tkinter 2.7.13-6.el7, rh-python36-python 3.6.3-7.el7, rh-python35-python 3.5.1-12.el7, python27-python-libs 2.7.13-6.el7, python27-python-test 2.7.13-6.el7, +9 more
    fixed: vendor fix RHSA-2019:0806
  • Red Hat Virtualization 4 Hypervisor for RHEL 7 rhvm-appliance 4.2-20190411.1.el7, redhat-virtualization-host 4.2-20190411.1.el7_6, redhat-virtualization-host-image-update 4.2-20190411.1.el7_6 Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts rhvm-appliance 4.2-20190411.1.el7
    fixed: vendor fix RHBA-2019:0764

1 more fixed, 2 more not affected in the full advisory

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 9.8

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 ICSMA-21-187-01 updated cvss 3.7

Philips Vue PACS (Update B)

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
32 d ago

Exploit prediction

7.67% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/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-173 Improper Handling of Alternate Encoding

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.