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CVE-2016-9964: bottle.py vulnerable to CRLF Injection

May 17, 2022 (updated November 18, 2024)

bottle.py is a fast and simple micro-framework for python web-applications. redirect() in bottle.py in bottle 0.12.10 doesn’t filter a “\r\n” sequence, which leads to a CRLF attack, as demonstrated by a redirect(“233\r\nSet-Cookie: name=salt”) call.

References

  • github.com/advisories/GHSA-j6f7-hghw-g437
  • github.com/bottlepy/bottle
  • github.com/bottlepy/bottle/commit/6d7e13da0f998820800ecb3fe9ccee4189aefb54
  • github.com/bottlepy/bottle/commit/78f67d51965db11cb1ed0003f1eb7926458b5c2c
  • github.com/bottlepy/bottle/issues/913
  • github.com/pypa/advisory-database/tree/main/vulns/bottle/PYSEC-2016-24.yaml
  • nvd.nist.gov/vuln/detail/CVE-2016-9964
  • web.archive.org/web/20170214030628/http://www.securityfocus.com/bid/94961

Code Behaviors & Features

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Affected versions

All versions starting from 0.10.1 before 0.12.11

Fixed versions

  • 0.12.11

Solution

Upgrade to version 0.12.11 or above.

Impact 6.5 MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')

Source file

pypi/bottle/CVE-2016-9964.yml

Spotted a mistake? Edit the file on GitLab.

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