Vulnerability CVE-2018-1000164
Published: 2018-04-18

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.

Type:

CWE-93

 (Improper Neutralization of CRLF Sequences ('CRLF Injection'))

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Gunicorn -> Gunicorn 
Debian -> Debian linux 

 References:
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
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