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Improper Input Validation in Twisted

Critical severity GitHub Reviewed Published Mar 31, 2020 to the GitHub Advisory Database • Updated Sep 5, 2023

Package

pip Twisted (pip)

Affected versions

< 20.3.0

Patched versions

20.3.0

Description

In Twisted Web before 20.3.0, there was an HTTP request splitting vulnerability. When presented with two content-length headers, it ignored the first header. When the second content-length value was set to zero, the request body was interpreted as a pipelined request.

References

Published by the National Vulnerability Database Mar 12, 2020
Reviewed Mar 31, 2020
Published to the GitHub Advisory Database Mar 31, 2020
Last updated Sep 5, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.934%
(84th percentile)

Weaknesses

CVE ID

CVE-2020-10108

GHSA ID

GHSA-h96w-mmrf-2h6v

Source code

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