Inconsistent interpretation of HTTP requests in Bottle - CVE-2020-28473

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Main Vulnerability Database Vulnerabilities #VU77305

Inconsistent interpretation of HTTP requests in Bottle - CVE-2020-28473

Published: June 14, 2023


Vulnerability identifier: #VU77305
CSH Severity: High
CVSS v4: 5.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-28473
CWE-ID: CWE-444
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to the usage of a vector called parameter cloaking. A remote attacker can trick the victim into opening a specially crafted HTTP request, smuggle arbitrary HTTP headers and cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server.


Affected software

Bottle
Python for Scientific Computing
Fedora
Ubuntu
openEuler
python3-bottle (Ubuntu package)
python-bottle (Ubuntu package)
python-bottle
python2-bottle
python3-bottle
IBM Cloud Pak for Data System
IBM Integrated Analytics System

How to mitigate CVE-2020-28473

Install updates from vendor's website.

Bottle - update to 0.12.19
Python for Scientific Computing - update to 4.2.1
python3-bottle (Ubuntu package) - addressed in versions 0.12.13-1ubuntu0.1, 0.12.15-2.1ubuntu0.1
python-bottle (Ubuntu package) - update to 0.12.13-1ubuntu0.1
python-bottle - update to 0.12.13-8
python2-bottle - update to 0.12.13-8
python3-bottle - update to 0.12.13-8
python-bottle - update to 0.12.21-1.el7
IBM Cloud Pak for Data System - update to 1.0.8.2
IBM Integrated Analytics System - update to 1.0.28.0

External References

Related Security Bulletins