PyPi: Websockets

CVE-2018-1000518

Safety vulnerability ID: 42249

This vulnerability was reviewed by experts

The information on this page was manually curated by our Cybersecurity Intelligence Team.

Created at Jun 26, 2018 Updated at Mar 29, 2024

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Advisory

Websockets 5.0 includes a fix for CVE-2018-1000518: aaugustin websockets version 4 contains a CWE-409 -Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in Servers and clients, unless configured with compression=None that can result in Denial of Service by memory exhaustion. This attack appear to be exploitable via sending a specially crafted frame on an established connection.
https://github.com/aaugustin/websockets/pull/407

Affected package

websockets

Latest version: 12.0

An implementation of the WebSocket Protocol (RFC 6455 & 7692)

Affected versions

Fixed versions

Vulnerability changelog

This vulnerability has no description

Resources

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Severity Details

CVSS Base Score

HIGH 7.5

CVSS v3 Details

HIGH 7.5

Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality Impact (C): NONE
Integrity Impact (I): NONE
Availability Availability (A): HIGH

CVSS v2 Details

MEDIUM 5.0

Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (Au): NONE
Confidentiality Impact (C): NONE
Integrity Impact (I): NONE
Availability Impact (A): PARTIAL