CVE-2021-3801
Description
Insufficient Regular Expression Complexity in prismjs leads to a Regular Expression Denial of Service (ReDoS) attack. An unauthenticated attacker can exploit this flaw to cause an application to consume an excess amount of CPU by providing a crafted HTML comment as input. This can result in a denial of service attack.
Statement
OpenShift Container Platform (OCP) grafana-container does package a vulnerable verison of prismjs. However due to the instance being read only and behind OpenShift OAuth, it has been given a Low impact. Additionally it has been marked as wont-fix at this time and may be fixed in a future release.
Just as OCP, OpenShift ServiceMesh (OSSM) components are behind OpenShift OAuth what reducing impact to 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 | 6.5 | 6.5 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | None | None | N/A |
| User Interaction | Required | Required | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | None | None | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | High | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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