CVE-2019-9674

Description

A ZIP bomb attack was found in the Python zipfile module. A remote attacker could abuse this flaw by providing a specially crafted ZIP file that, when decompressed by zipfile, would exhaust system resources resulting in a denial of service.

Statement

There is no plan to fix this flaw. Programs using the Python zipfile module should be responsible for validating external untrusted ZIP files. For further details, please refer to the following URLs:

[1] https://docs.python.org/dev/library/zipfile.html#decompression-pitfalls

[2] https://python-security.readthedocs.io/security.html#archives-and-zip-bomb

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 HatNVDcve.org
Base Score4.27.5N/A
Attack VectorLocalNetworkN/A
Attack ComplexityLowLowN/A
Privileges RequiredHighNoneN/A
User InteractionRequiredNoneN/A
ScopeUnchangedUnchangedN/A
ConfidentialityNoneNoneN/A
Integrity ImpactNoneNoneN/A
Availability ImpactHighHighN/A

Vector

Red Hat: CVSS:3.1/AV:L/AC:L/PR:H/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

Understanding the Weakness (CWE)

CWE-409

Availability

Technical Impact: DoS: Amplification; DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory)

System resources, CPU and memory, can be quickly consumed. This can lead to poor system performance or system crash.

Frequently Asked Questions

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