Vulnerability in Gunicorn
CVE-2018-1000164
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.
Vulnerability class: CRLF Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.024 (83.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: -0.000
Affected products
- Gunicorn — versions 19.4.5
- Debian Linux — versions 7.0, 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- epadillas.github.io/2018/04/02/http-header-splitting-in-gunicorn-19.4.5 (Exploit, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/04/msg00022.html (mailing-list, Third Party Advisory)
- github.com/benoitc/gunicorn/issues/1227 (Exploit, Third Party Advisory, Issue Tracking)
- www.debian.org/security/2018/dsa-4186 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4022-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2018-1000164?
- CVE-2018-1000164 is a high-severity vulnerability in Gunicorn, classified under CRLF Injection. CVSS score: 7.5/10. Published 2018-04-18.
- How severe is CVE-2018-1000164?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-1000164 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.