---
title: "CVE-2004-1031\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2004-1031?format=md
keywords: index, follow
---

# CVE-2004-1031

Publication date 1 March 2005

Last updated 17 July 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

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## Description

fcronsighup in Fcron 2.0.1, 2.9.4, and possibly earlier versions allows
local users to bypass access restrictions and load an arbitrary
configuration file by starting an suid process and pointing the fcronsighup
configuration file to a /proc entry that is owned by root but modifiable by
the user, such as /proc/self/cmdline or /proc/self/environ.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| fcron | 7.04 feisty | Fixed 3.0.0-2 |
| 6.10 edgy | Fixed 3.0.0-2 |
| 6.06 LTS dapper | Fixed 3.0.0-2 |

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* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1031)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2004-1031)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2004-1031)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2004-1031)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2004-1031>