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Regular Expression Denial of Service in hosted-git-info

Moderate severity GitHub Reviewed Published May 6, 2021 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

npm hosted-git-info (npm)

Affected versions

>= 3.0.0, < 3.0.8
< 2.8.9

Patched versions

3.0.8
2.8.9

Description

The npm package hosted-git-info before 3.0.8 are vulnerable to Regular Expression Denial of Service (ReDoS) via regular expression shortcutMatch in the fromUrl function in index.js. The affected regular expression exhibits polynomial worst-case time complexity

References

Published by the National Vulnerability Database Mar 23, 2021
Reviewed Mar 24, 2021
Published to the GitHub Advisory Database May 6, 2021
Last updated Feb 1, 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
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

EPSS score

0.324%
(71st percentile)

Weaknesses

CVE ID

CVE-2021-23362

GHSA ID

GHSA-43f8-2h32-f4cj

Source code

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