CVE-2024-7592
Description
A flaw was found in the http.cookies module in the Python package. When parsing cookies that contain backslashes, under certain circumstances, the module uses an algorithm with quadratic complexity, leading to excessive CPU consumption.
Statement
This vulnerability is classified as low severity, as also marked by upstream Python, because while it can cause excessive CPU usage, its exploitability is constrained by practical factors. Most production environments enforce request size limits (e.g., via web servers like Nginx or Apache), preventing attackers from sending arbitrarily large cookies.
Additionally, the impact is localized to individual requests, meaning it does not persistently degrade system performance or lead to remote code execution (RCE). The attack requires multiple large requests to have a significant effect, making it inefficient compared to more severe denial-of-service (DoS) vectors.
Mitigation
Mitigation for this issue is either not available or the currently available options do not 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).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.8 | 7.5 | 7.5 |
| Attack Vector | Network | Network | Network |
| Attack Complexity | High | Low | Low |
| Privileges Required | Low | None | None |
| User Interaction | Required | 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:H/PR:L/UI:R/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
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