CVE-2021-44906
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Insights vulnerability analysis
Description
An Uncontrolled Resource Consumption flaw was found in minimist. This flaw allows an attacker to trick the library into adding or modifying the properties of Object.prototype, using a constructor or proto payload, resulting in prototype pollution and loss of confidentiality, availability, and integrity.
Statement
The original fix for CVE-2020-7598 was incomplete as it was still possible to bypass in some cases. While this flaw (CVE-2021-44906) enables attackers to control objects that they should not have access to, actual exploitation would still require a chain of independent flaws. Even though the CVSS for CVE-2021-44906 is higher than CVE-2020-7598, they are both rated as having Moderate impact.
Within Red Hat Satellite 6 this flaw has been rated as having a security impact of Low. It is not currently planned to be addressed there, as the minimist library is only included in the -doc subpackage and is part of test fixtures that are not in the execution path used by the rabl gem.
Additional information
- Bugzilla 2066009: minimist: prototype pollution
- CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
- FAQ: Frequently asked questions about CVE-2021-44906
Common Vulnerability Scoring System (CVSS) Score Details
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).
| Red Hat | NVD | |
|---|---|---|
CVSS v3 Base Score | 9.8 | 9.8 |
Attack Vector | Network | Network |
Attack Complexity | Low | Low |
Privileges Required | None | None |
User Interaction | None | None |
Scope | Unchanged | Unchanged |
Confidentiality Impact | High | High |
Integrity Impact | High | High |
Availability Impact | High | High |
CVSS v3 Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Application Data
An attacker can inject attributes that are used in other components.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
An attacker can override existing attributes with ones that have incompatible type, which may lead to a crash.
Frequently Asked Questions
Why is Red Hat's CVSS v3 score or Impact different from other vendors?
My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?
What can I do if my product is listed as "Will not fix"?
What can I do if my product is listed as "Fix deferred"?
What is a mitigation?
I have a Red Hat product but it is not in the above list, is it affected?
Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?
My product is listed as "Out of Support Scope". What does this mean?
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