An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1; v3.6.11, v3.6.11rc1, v3.6.12; v3.7.8, v3.7.8rc1, v3.7.9; v3.8.3, v3.8.3rc1, v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1.
CVSS Details
- CVSS 3.1 Base Score: 6.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-python2alpine-linux-upgrade-python2-tkinter | Oct 1, 2024 | Oct 23, 2019 | |
| Amazon_linux | — | amazon-linux-upgrade--python34amazon-linux-upgrade--python35amazon-linux-upgrade--python36amazon-linux-upgrade-python26amazon-linux-upgrade-python27amazon-linux-upgrade-python34amazon-linux-upgrade-python36 | Sep 1, 2020 | Oct 23, 2019 |
| Debian | debian-upgrade-python2-7 | Jul 16, 2020 | Oct 23, 2019 | |
| F5 Big Ip | f5-bigip-upgrade-latest | Jun 17, 2026 | Aug 21, 2025 | |
| Freebsd | freebsd-upgrade-package-python35freebsd-upgrade-package-python37freebsd-upgrade-package-python27freebsd-upgrade-package-python38freebsd-upgrade-package-python36 | Sep 20, 2020 | Sep 20, 2020 | |
| Oracle Solaris | oracle-solaris-11-4-upgrade-library-python-tkinter-27-2-7-18-11-4-24-0-1-75-1oracle-solaris-11-4-upgrade-library-python-tkinter-34-3-4-10-11-4-21-0-1-69-0oracle-solaris-11-4-upgrade-library-python-tkinter-35-3-5-9-11-4-21-0-1-69-0oracle-solaris-11-4-upgrade-library-python-tkinter-37-3-7-5-11-4-24-0-1-75-1oracle-solaris-11-4-upgrade-runtime-python-27-2-7-18-11-4-24-0-1-75-1oracle-solaris-11-4-upgrade-runtime-python-27-tests-2-7-18-11-4-24-0-1-75-1oracle-solaris-11-4-upgrade-runtime-python-34-3-4-10-11-4-21-0-1-69-0oracle-solaris-11-4-upgrade-runtime-python-35-3-5-9-11-4-21-0-1-69-0oracle-solaris-11-4-upgrade-runtime-python-37-3-7-5-11-4-24-0-1-75-1 | Jan 19, 2021 | Oct 23, 2019 | |
| Redhat_linux | no-fix-redhat-rpm-package | Jul 9, 2025 | Oct 23, 2019 | |
| Suse | — | suse-upgrade-libpython2_7-1_0suse-upgrade-libpython2_7-1_0-32bitsuse-upgrade-libpython3_4m1_0suse-upgrade-libpython3_4m1_0-32bitsuse-upgrade-libpython3_6m1_0suse-upgrade-libpython3_6m1_0-32bitsuse-upgrade-pythonsuse-upgrade-python-32bitsuse-upgrade-python-basesuse-upgrade-python-base-32bitsuse-upgrade-python-cursessuse-upgrade-python-demosuse-upgrade-python-develsuse-upgrade-python-docsuse-upgrade-python-doc-pdfsuse-upgrade-python-gdbmsuse-upgrade-python-idlesuse-upgrade-python-rpm-macrossuse-upgrade-python-tksuse-upgrade-python-xmlsuse-upgrade-python3suse-upgrade-python3-32bitsuse-upgrade-python3-basesuse-upgrade-python3-base-32bitsuse-upgrade-python3-cursessuse-upgrade-python3-dbmsuse-upgrade-python3-develsuse-upgrade-python3-docsuse-upgrade-python3-doc-devhelpsuse-upgrade-python3-idlesuse-upgrade-python3-testsuitesuse-upgrade-python3-tksuse-upgrade-python3-toolssuse-upgrade-python36suse-upgrade-python36-basesuse-upgrade-shared-python-startup | Mar 24, 2020 | Oct 23, 2019 |
| Ubuntu | ubuntu-pro-upgrade-python2-7ubuntu-pro-upgrade-python2-7-minimalubuntu-pro-upgrade-python3-4ubuntu-pro-upgrade-python3-4-minimalubuntu-pro-upgrade-python3-5ubuntu-pro-upgrade-python3-5-minimalubuntu-pro-upgrade-python3-6ubuntu-pro-upgrade-python3-6-minimalubuntu-pro-upgrade-python3-7ubuntu-pro-upgrade-python3-7-minimalubuntu-pro-upgrade-python3-8ubuntu-pro-upgrade-python3-8-minimalubuntu-upgrade-python2-7ubuntu-upgrade-python2-7-minimalubuntu-upgrade-python3-5ubuntu-upgrade-python3-5-minimalubuntu-upgrade-python3-6ubuntu-upgrade-python3-6-minimalubuntu-upgrade-python3-7ubuntu-upgrade-python3-7-minimalubuntu-upgrade-python3-8ubuntu-upgrade-python3-8-minimal | Apr 22, 2020 | Oct 23, 2019 | |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Jan 20, 2025 | Oct 23, 2019 |
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