Skip to content

Regular Expression Denial of Service in Deno.upgradeWebSocket API

Moderate
bartlomieju published GHSA-jc97-h3h9-7xh6 Mar 23, 2023

Package

Deno

Affected versions

1.12.0

Patched versions

1.31.0

Description

Impact

What kind of vulnerability is it? Who is impacted?

A specially crafted "Connection"/"Upgrade" header could have been used to significantly slow down web socket servers which used "Deno.upgradeWebSocket()" API.

Patches

Has the problem been patched? What versions should users upgrade to?

It is recommended that users upgrade to Deno 1.31.0.

Severity

Moderate

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
None
Integrity
None
Availability
Low

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:N/I:N/A:L

CVE ID

CVE-2023-26103

Weaknesses

Credits