Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2019-11236

Improper Neutralization of CRLF Sequences ('CRLF Injection')

Published: Apr 15, 2019 | Modified: Nov 21, 2024
CVSS 3.x
6.1
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
6.5 MODERATE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-11236
CWEhttps://cwe.mitre.org/data/definitions/93.html

In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.

Weakness

The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

Affected Software

NameVendorStart VersionEnd Version
Urllib3Python*1.24.2 (including)
Red Hat Ansible Tower 3.5 for RHEL 7RedHatansible-tower-35/ansible-tower:3.5.6-1*
Red Hat Ansible Tower 3.6 for RHEL 7RedHatansible-tower-36/ansible-tower:3.6.4-1*
Red Hat Enterprise Linux 7RedHatpython-urllib3-0:1.10.2-7.el7*
Red Hat Enterprise Linux 7RedHatpython-pip-0:9.0.3-7.el7_7*
Red Hat Enterprise Linux 7RedHatpython-virtualenv-0:15.1.0-4.el7_7*
Red Hat Enterprise Linux 7RedHatpython-pip-0:9.0.3-7.el7_8*
Red Hat Enterprise Linux 7RedHatpython-virtualenv-0:15.1.0-4.el7_8*
Red Hat Enterprise Linux 8RedHatpython27:2.7-8010020190903182548.51c94b97*
Red Hat Enterprise Linux 8RedHatpython27:2.7-8020020200117110429.90f98d4f*
Red Hat Enterprise Linux 8RedHatpython-pip-0:9.0.3-16.el8*
Red Hat Enterprise Linux 8RedHatpython-urllib3-0:1.24.2-2.el8*
Red Hat Enterprise Linux 8RedHatpython-pip-0:9.0.3-16.el8*
Red Hat OpenShift Container Platform 4.3RedHatpython-urllib3-0:1.24.3-1.el7*
Red Hat OpenShift Container Platform 4.4RedHatpython-urllib3-0:1.24.3-1.el7*
Python-urllib3Ubuntubionic*
Python-urllib3Ubuntucosmic*
Python-urllib3Ubuntudevel*
Python-urllib3Ubuntudisco*
Python-urllib3Ubuntuesm-infra-legacy/trusty*
Python-urllib3Ubuntuesm-infra/bionic*
Python-urllib3Ubuntuesm-infra/xenial*
Python-urllib3Ubuntutrusty*
Python-urllib3Ubuntutrusty/esm*
Python-urllib3Ubuntuupstream*
Python-urllib3Ubuntuxenial*

Potential Mitigations

References

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