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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 2.41% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-93
- Affected
- gunicorn/gunicorn · debian/debian linux
- Source
- cve@mitre.org
References
- https://epadillas.github.io/2018/04/02/http-header-splitting-in-gunicorn-19.4.5Exploit, Third Party Advisory
- https://github.com/benoitc/gunicorn/issues/1227Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/04/msg00022.htmlThird Party Advisory
- https://usn.ubuntu.com/4022-1/
- https://www.debian.org/security/2018/dsa-4186Third Party Advisory
- https://epadillas.github.io/2018/04/02/http-header-splitting-in-gunicorn-19.4.5Exploit, Third Party Advisory
- https://github.com/benoitc/gunicorn/issues/1227Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/04/msg00022.htmlThird Party Advisory
- https://usn.ubuntu.com/4022-1/
- https://www.debian.org/security/2018/dsa-4186Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.