CVE-2020-7774
Description
A flaw was found in nodejs-y18n. There is a prototype pollution vulnerability in y18n's locale functionality. If an attacker is able to provide untrusted input via locale, they may be able to cause denial of service or in rare circumstances, impact to data integrity or confidentiality.
Statement
In OpenShift Container Platform (OCP), OpenShift ServiceMesh (OSSM) and OpenShift distributed tracing the affected components are behind OpenShift OAuth authentication. This restricts access to the vulnerable nodejs-y18n library to authenticated users only, therefore the impact is Low.
In Red Hat OpenShift Container Storage 4 the noobaa-core container includes the affected version of y18n as a dependency of yargs. However, no unsafe usage found where the module accepts untrusted input and hence this issue has been rated as having a security impact of Low.
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 | 7.3 | 9.8 | 7.3 |
| Attack Vector | Network | Network | Network |
| Attack Complexity | Low | Low | Low |
| Privileges Required | None | None | None |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | Low | High | Low |
| Integrity Impact | Low | High | Low |
| Availability Impact | Low | High | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P
Red Hat CVSS v3 Score Explanation
This has low impact to confidentiality, integrity and availability, as an attacker could send a specially-crafted request via locale, they can be able to cause denial of service or in rare circumstances, allow an attacker to manipulates certain attributes to overwrite, or pollute, a JavaScript application object prototype of the base object by injecting other values. So, there will be some impact to Integrity, but data modification does not have a direct, serious impact on the impacted component. Also, If attacker succeed then there is some loss of confidentiality. But the attacker does not know what information could be obtained, this means the access to any information is limited. Thus, putting CIA as Low.
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Application Data
An attacker could modify sensitive data or program variables.
Integrity
Technical Impact: Execute Unauthorized Code or Commands
Other,Integrity
Technical Impact: Varies by Context; Alter Execution Logic
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