Skip to content

uri-template-lite Regular Expression Denial of Service

Moderate severity GitHub Reviewed Published Aug 25, 2022 to the GitHub Advisory Database • Updated Nov 28, 2023

Package

npm uri-template-lite (npm)

Affected versions

< 22.9.0

Patched versions

22.9.0

Description

An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the uri-template-lite npm package, when an attacker is able to supply arbitrary input to the "URI.expand" method.

References

Published by the National Vulnerability Database Aug 24, 2022
Published to the GitHub Advisory Database Aug 25, 2022
Reviewed Sep 1, 2022
Last updated Nov 28, 2023

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
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
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:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.097%
(42nd percentile)

Weaknesses

CVE ID

CVE-2021-43309

GHSA ID

GHSA-chw2-6c7r-37p7

Source code

Credits

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.