CVE-2021-27515
Description
An input validation flaw exists in the node.js-url-parse, which results in the URL being incorrectly set to the document location protocol instead of the URL being passed as an argument. This flaw allows an attacker to bypass security checks on URLs. The highest threat from this vulnerability is to integrity. This is an incomplete fix for CVE-2020-8124.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.3 | 5.3 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | None | None | N/A |
| User Interaction | None | None | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | None | None | N/A |
| Integrity Impact | Low | Low | N/A |
| Availability Impact | None | None | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Red Hat CVSS v3 Score Explanation
The vulnerable function doesn't do an explicit security checks itselfs, so exploitation of this flaw would rely on a vulnerable application doing security checks after the parsing of the malicious url. Also, it relies on the attacker being able to supply a url to be parsed.
Understanding the Weakness (CWE)
Other
Technical Impact: Varies by Context
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