CVE-2025-71330
Description
A flaw was found in image-size. A remote attacker can exploit this vulnerability by providing a specially crafted ICNS image buffer. This malicious buffer, containing valid magic bytes and a zero-valued entry length, causes an infinite loop in the ICNS parser. This can permanently block the Node.js event loop, leading to a denial of service (DoS) for the affected system.
Statement
A flaw was found in the image-size npm package. A crafted ICNS image buffer with a zero-valued entry length field can trigger an infinite loop in the ICNS parser, permanently blocking the Node.js event loop and causing a denial of service.
Mitigation
Upgrade to a version of image-size that validates ICNS entry length fields. As a workaround, validate image inputs before passing them to image-size, rejecting ICNS files with zero-length entries.
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 | N/A | 7.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:L/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
Red Hat CVSS v3 Score Explanation
PR:L - all RH runtime paths require auth before upload/processing.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Amplification
An infinite loop will cause unexpected consumption of resources, such as CPU cycles or memory. The software's operation may slow down, or cause a long time to respond.
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