python-urllib3: CRLF injection due to not encoding the '\r\n' sequence leading to possible attack on internal service
Published Apr 15, 2019
5.3
MEDIUMCVSS 4.0
EPSS 2.07%
Description
In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.
Affected products
No data.
No data.
Red Hat Ansible Tower 3.5 for RHEL 7
ansible-tower-35/ansible-tower:3.5.6-1
Fixed · RHBA-2020:1539
Red Hat Ansible Tower 3.6 for RHEL 7
ansible-tower-36/ansible-tower:3.6.4-1
Fixed · RHBA-2020:1540
Red Hat Enterprise Linux 7
python-pip-0:9.0.3-7.el7_7
Fixed · RHSA-2020:0850
Red Hat Enterprise Linux 7
python-pip-0:9.0.3-7.el7_8
Fixed · RHSA-2020:2068
Red Hat Enterprise Linux 7
python-urllib3-0:1.10.2-7.el7
Fixed · RHSA-2019:2272
Red Hat Enterprise Linux 7
python-virtualenv-0:15.1.0-4.el7_7
Fixed · RHSA-2020:0851
Red Hat Enterprise Linux 7
python-virtualenv-0:15.1.0-4.el7_8
Fixed · RHSA-2020:2081
Red Hat Enterprise Linux 8
python-pip-0:9.0.3-16.el8
Fixed · RHSA-2020:1916
Red Hat Enterprise Linux 8
python-pip-0:9.0.3-16.el8
Fixed · RHSA-2020:1916
Red Hat Enterprise Linux 8
python-urllib3-0:1.24.2-2.el8
Fixed · RHSA-2019:3590
Red Hat Enterprise Linux 8
python27:2.7-8010020190903182548.51c94b97
Fixed · RHSA-2019:3335
Red Hat Enterprise Linux 8
python27:2.7-8020020200117110429.90f98d4f
Fixed · RHSA-2020:1605
Red Hat OpenShift Container Platform 4.3
python-urllib3-0:1.24.3-1.el7
Fixed · RHBA-2020:2804
Red Hat OpenShift Container Platform 4.4
python-urllib3-0:1.24.3-1.el7
Fixed · RHBA-2020:2785
Red Hat Enterprise Linux 6
python-urllib3
Will not fix
Red Hat Enterprise Linux 8
python36:3.6/python-virtualenv
Not affected
Red Hat OpenShift Container Platform 3.10
python-urllib3
Out of support scope
Red Hat OpenShift Container Platform 3.11
python-urllib3
Will not fix
Red Hat OpenShift Container Platform 3.6
python-urllib3
Out of support scope
Red Hat OpenShift Container Platform 3.7
python-urllib3
Out of support scope
Red Hat OpenShift Container Platform 3.9
python-urllib3
Out of support scope
Red Hat OpenStack Platform 10 (Newton)
python-urllib3
Will not fix
Red Hat OpenStack Platform 13 (Queens)
python-urllib3
Will not fix
Red Hat OpenStack Platform 14 (Rocky)
python-urllib3
Affected
Red Hat OpenStack Platform 15 (Stein)
python-urllib3
Affected
Red Hat OpenStack Platform 8 (Liberty)
python-urllib3
Will not fix
Red Hat OpenStack Platform 9 (Mitaka)
python-urllib3
Will not fix
Red Hat Satellite 6
python-urllib3
Out of support scope
Red Hat Software Collections
python27-python-pip
Will not fix
Red Hat Software Collections
python27-python-virtualenv
Will not fix
Red Hat Software Collections
rh-mongodb36-python-urllib3
Will not fix
Red Hat Software Collections
rh-python36-python-pip
Will not fix
Red Hat Software Collections
rh-python36-python-virtualenv
Will not fix
Red Hat Storage 3
python-urllib3
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Ansible Tower 3.5 for RHEL 7 | ansible-tower-35/ansible-tower:3.5.6-1 | Fixed | RHBA-2020:1539 |
| Red Hat Ansible Tower 3.6 for RHEL 7 | ansible-tower-36/ansible-tower:3.6.4-1 | Fixed | RHBA-2020:1540 |
| Red Hat Enterprise Linux 7 | python-pip-0:9.0.3-7.el7_7 | Fixed | RHSA-2020:0850 |
| Red Hat Enterprise Linux 7 | python-pip-0:9.0.3-7.el7_8 | Fixed | RHSA-2020:2068 |
| Red Hat Enterprise Linux 7 | python-urllib3-0:1.10.2-7.el7 | Fixed | RHSA-2019:2272 |
| Red Hat Enterprise Linux 7 | python-virtualenv-0:15.1.0-4.el7_7 | Fixed | RHSA-2020:0851 |
| Red Hat Enterprise Linux 7 | python-virtualenv-0:15.1.0-4.el7_8 | Fixed | RHSA-2020:2081 |
| Red Hat Enterprise Linux 8 | python-pip-0:9.0.3-16.el8 | Fixed | RHSA-2020:1916 |
| Red Hat Enterprise Linux 8 | python-pip-0:9.0.3-16.el8 | Fixed | RHSA-2020:1916 |
| Red Hat Enterprise Linux 8 | python-urllib3-0:1.24.2-2.el8 | Fixed | RHSA-2019:3590 |
| Red Hat Enterprise Linux 8 | python27:2.7-8010020190903182548.51c94b97 | Fixed | RHSA-2019:3335 |
| Red Hat Enterprise Linux 8 | python27:2.7-8020020200117110429.90f98d4f | Fixed | RHSA-2020:1605 |
| Red Hat OpenShift Container Platform 4.3 | python-urllib3-0:1.24.3-1.el7 | Fixed | RHBA-2020:2804 |
| Red Hat OpenShift Container Platform 4.4 | python-urllib3-0:1.24.3-1.el7 | Fixed | RHBA-2020:2785 |
| Red Hat Enterprise Linux 6 | python-urllib3 | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | python36:3.6/python-virtualenv | Not affected | n/a |
| Red Hat OpenShift Container Platform 3.10 | python-urllib3 | Out of support scope | n/a |
| Red Hat OpenShift Container Platform 3.11 | python-urllib3 | Will not fix | n/a |
| Red Hat OpenShift Container Platform 3.6 | python-urllib3 | Out of support scope | n/a |
| Red Hat OpenShift Container Platform 3.7 | python-urllib3 | Out of support scope | n/a |
| Red Hat OpenShift Container Platform 3.9 | python-urllib3 | Out of support scope | n/a |
| Red Hat OpenStack Platform 10 (Newton) | python-urllib3 | Will not fix | n/a |
| Red Hat OpenStack Platform 13 (Queens) | python-urllib3 | Will not fix | n/a |
| Red Hat OpenStack Platform 14 (Rocky) | python-urllib3 | Affected | n/a |
| Red Hat OpenStack Platform 15 (Stein) | python-urllib3 | Affected | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | python-urllib3 | Will not fix | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | python-urllib3 | Will not fix | n/a |
| Red Hat Satellite 6 | python-urllib3 | Out of support scope | n/a |
| Red Hat Software Collections | python27-python-pip | Will not fix | n/a |
| Red Hat Software Collections | python27-python-virtualenv | Will not fix | n/a |
| Red Hat Software Collections | rh-mongodb36-python-urllib3 | Will not fix | n/a |
| Red Hat Software Collections | rh-python36-python-pip | Will not fix | n/a |
| Red Hat Software Collections | rh-python36-python-virtualenv | Will not fix | n/a |
| Red Hat Storage 3 | python-urllib3 | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the version of python-urllib3 shipped with Red Hat Gluster Storage 3, as it is vulnerable to CRLF injection. Red Hat Satellite 6.2 is on Maintenance Support 2 phase, hence only selected critical and important issues will be fixed. Please refer to Red Hat Satellite Product Life Cycle page for more information. In Red Hat OpenStack Platform 13, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP python-urllib3 package.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.07% (0.02073) | 80.76th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.06% (0.02056) | 78.73th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.65% (0.00654) | 68.55th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.86% (0.01859) | 72.00th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.55% (0.00547) | 65.89th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.61% (0.00615) | 79.47th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.43% (0.00434) | 73.88th | v3 (v2023.03.01) |
| Oct 9, 2023 | 0.43% (0.00434) | 71.66th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.50% (0.00504) | 73.49th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.45% (0.00447) | 71.03th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 17.11% (0.17112) | 93.05th | v2 (v2022.01.01) |
| Feb 3, 2022 | 12.48% (0.12481) | 88.86th | v1 |
| Jan 6, 2022 | 12.48% (0.12481) | 88.73th | v1 |
| Jan 5, 2022 | 3.08% (0.03080) | 81.80th | v1 |
| Jun 24, 2021 | 3.08% (0.03080) | 0.00th | v1 |
| Jun 19, 2021 | 12.48% (0.12481) | 0.00th | v1 |
| Jun 17, 2021 | 3.08% (0.03080) | 0.00th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.88% (0.02880) | 0.00th | v1 |
References (25)
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00039.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00041.html vendor-advisory
- https://access.redhat.com/errata/RHSA-2019:2272 vendor-advisory
- https://access.redhat.com/errata/RHSA-2019:3335 vendor-advisory
- https://access.redhat.com/errata/RHSA-2019:3590 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2019-11236 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1700824 Issue Tracking
- https://github.com/advisories/GHSA-r64q-w8jr-g9qp Advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2019-132.yaml
- https://github.com/urllib3/urllib3/issues/1553 ExploitIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/06/msg00016.html mailing-list
- https://lists.debian.org/debian-lts-announce/2021/06/msg00015.html mailing-list
- https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html mailing-list
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKGPJLVLVYCL4L4B4G5TIOTVK4BKPG72/ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R62XGEYPUTXMRHGX5I37EBCGQ5COHGKR/ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TBI45HO533KYHNB5YRO43TBYKA3E3VRL/ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XOSA2NT4DUQDBEIWE6O7KKD24XND7TE2/ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NKGPJLVLVYCL4L4B4G5TIOTVK4BKPG72
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R62XGEYPUTXMRHGX5I37EBCGQ5COHGKR
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TBI45HO533KYHNB5YRO43TBYKA3E3VRL
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XOSA2NT4DUQDBEIWE6O7KKD24XND7TE2
- https://nvd.nist.gov/vuln/detail/CVE-2019-11236
- https://usn.ubuntu.com/3990-1 vendor-advisory
- https://usn.ubuntu.com/3990-2 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-11236
Change history (0)
No recorded changes yet.