CVE-2024-21490
Description
An Inefficient Regular Expression Complexity vulnerability was found in NodeJS Angular. A regular expression used to split the value of the ng-srcset directive is vulnerable to super-linear runtime due to backtracking, leading to denial of service.
Statement
The vulnerability in the Angular package, has been categorized as having a moderate severity rather than being labeled as important due to several factors. While the regular expression used for splitting the value of the ng-srcset directive is susceptible to super-linear runtime caused by backtracking, the practical exploitation of this vulnerability requires a large, carefully-crafted input. This input, which triggers catastrophic backtracking and potential denial of service, would not be easily achievable in typical use cases. Additionally, the affected package, Angular 1.3.0, is already designated as End of Life (EOL) and is not receiving updates, limiting its relevance to current development practices.
Red Hat Enterprise Linux is not affected as its not shipping the vulnerable code.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
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).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | 7.5 | 7.5 |
| 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 | None | None | None |
| Integrity Impact | None | None | None |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU)
Attackers can create crafted inputs that intentionally cause the regular expression to use excessive backtracking in a way that causes the CPU consumption to spike.
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