CVE-2018-1000164: CRLF Injection
First published: Wed Apr 18 2018(Updated: )
gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in "process_headers" function in "gunicorn/http/wsgi.py" that can result in an attacker causing the server to return arbitrary HTTP headers. This vulnerability appears to have been fixed in 19.5.0.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pip/gunicorn | <19.5.0 | 19.5.0 |
| debian/gunicorn | 20.1.0-1 20.1.0-6 23.0.0-1 | |
| Gunicorn | =19.4.5 | |
| Debian Linux | =7.0 | |
| Debian Linux | =8.0 |
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Reference Links
- https://epadillas.github.io/2018/04/02/http-header-splitting-in-gunicorn-19.4.5
- https://github.com/benoitc/gunicorn/issues/1227
- https://lists.debian.org/debian-lts-announce/2018/04/msg00022.html
- https://usn.ubuntu.com/4022-1/
- https://www.debian.org/security/2018/dsa-4186
- https://launchpad.net/bugs/cve/CVE-2018-1000164
- https://github.com/benoitc/gunicorn/commit/5263a4ef2a63c62216680876f3813959839608ff
- https://security-tracker.debian.org/tracker/CVE-2018-1000164
- https://nvd.nist.gov/vuln/detail/CVE-2018-1000164
- https://github.com/advisories/GHSA-32pc-xphx-q4f6 (Advisory)
- https://github.com/pypa/advisory-database/tree/main/vulns/gunicorn/PYSEC-2018-55.yaml
- https://usn.ubuntu.com/4022-1
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000164
- https://ubuntu.com/security/CVE-2018-1000164
Frequently Asked Questions
What is the severity of CVE-2018-1000164?
CVE-2018-1000164 is classified as a medium severity vulnerability due to the potential for arbitrary HTTP headers to be returned.
How do I fix CVE-2018-1000164?
To fix CVE-2018-1000164, upgrade Gunicorn to version 19.5.0 or later.
What versions of Gunicorn are affected by CVE-2018-1000164?
Gunicorn version 19.4.5 is the only version affected by CVE-2018-1000164.
What are the consequences of exploiting CVE-2018-1000164?
Exploiting CVE-2018-1000164 can allow an attacker to inject arbitrary HTTP headers, potentially leading to session hijacking or other types of attacks.
Is CVE-2018-1000164 specific to any operating systems?
CVE-2018-1000164 affects installations of Gunicorn across various operating systems, particularly those using vulnerable versions in a web server context.
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