CVE-2020-26116
python: CRLF injection via HTTP request method in httplib/http.client
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
1Exploited in Wild
-Decision
Descriptions
http.client in Python 3.x before 3.5.10, 3.6.x before 3.6.12, 3.7.x before 3.7.9, and 3.8.x before 3.8.5 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of HTTPConnection.request.
http.client en Python 3.x antes de la versión 3.5.10, 3.6.x antes de la versión 3.6.12, 3.7.x antes de la versión 3.7.9, y 3.8.x antes de la versión 3.8.5 permite la inyección de CRLF si el atacante controla el método de petición HTTP, como se demuestra insertando caracteres de control CR y LF en el primer argumento de HTTPConnection.request
A flaw was found in Python. The built-in modules httplib and http.client (included in Python 2 and Python 3, respectively) do not properly validate CRLF sequences in the HTTP request method, potentially allowing manipulation to the request by injecting additional HTTP headers. The highest threat from this vulnerability is to confidentiality and integrity.
Red Hat Advanced Cluster Management for Kubernetes 2.2.4 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs and security issues. Issues addressed include denial of service and integer overflow vulnerabilities.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-09-27 CVE Reserved
- 2020-09-27 CVE Published
- 2024-08-04 CVE Updated
- 2024-08-04 First Exploit
- 2025-03-31 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
- CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
CAPEC
References (16)
URL | Tag | Source |
---|---|---|
https://lists.debian.org/debian-lts-announce/2020/11/msg00032.html | Mailing List |
|
https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html | Mailing List |
|
https://security.netapp.com/advisory/ntap-20201023-0001 | Third Party Advisory |
|
URL | Date | SRC |
---|---|---|
https://bugs.python.org/issue39603 | 2024-08-04 |
URL | Date | SRC |
---|---|---|
https://python-security.readthedocs.io/vuln/http-header-injection-method.html | 2023-11-07 | |
https://www.oracle.com/security-alerts/cpuoct2021.html | 2023-11-07 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Python Search vendor "Python" | Python Search vendor "Python" for product "Python" | >= 3.0.0 < 3.5.10 Search vendor "Python" for product "Python" and version " >= 3.0.0 < 3.5.10" | - |
Affected
| ||||||
Python Search vendor "Python" | Python Search vendor "Python" for product "Python" | >= 3.6.0 < 3.6.12 Search vendor "Python" for product "Python" and version " >= 3.6.0 < 3.6.12" | - |
Affected
| ||||||
Python Search vendor "Python" | Python Search vendor "Python" for product "Python" | >= 3.7.0 < 3.7.9 Search vendor "Python" for product "Python" and version " >= 3.7.0 < 3.7.9" | - |
Affected
| ||||||
Python Search vendor "Python" | Python Search vendor "Python" for product "Python" | >= 3.8.0 < 3.8.5 Search vendor "Python" for product "Python" and version " >= 3.8.0 < 3.8.5" | - |
Affected
| ||||||
Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 31 Search vendor "Fedoraproject" for product "Fedora" and version "31" | - |
Affected
| ||||||
Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 32 Search vendor "Fedoraproject" for product "Fedora" and version "32" | - |
Affected
| ||||||
Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
| ||||||
Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04" | - |
Affected
| ||||||
Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | esm |
Affected
| ||||||
Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | esm |
Affected
| ||||||
Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
| ||||||
Netapp Search vendor "Netapp" | Solidfire Search vendor "Netapp" for product "Solidfire" | - | - |
Affected
| ||||||
Netapp Search vendor "Netapp" | Hci Compute Node Search vendor "Netapp" for product "Hci Compute Node" | - | - |
Safe
| ||||||
Netapp Search vendor "Netapp" | Hci Storage Node Search vendor "Netapp" for product "Hci Storage Node" | - | - |
Affected
| ||||||
Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
Oracle Search vendor "Oracle" | Zfs Storage Appliance Kit Search vendor "Oracle" for product "Zfs Storage Appliance Kit" | 8.8 Search vendor "Oracle" for product "Zfs Storage Appliance Kit" and version "8.8" | - |
Affected
| ||||||
Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 15.1 Search vendor "Opensuse" for product "Leap" and version "15.1" | - |
Affected
|