---
title: "CVE-2017-12847\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-2017-12847?format=md
keywords: index, follow
---

# CVE-2017-12847

Publication date 23 August 2017

Last updated 26 August 2025

---

Ubuntu priority

**Low**

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

## Cvss 3 Severity Score

**6.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2017-12847?format=md#impact-score)

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## Description

Nagios Core before 4.3.3 creates a nagios.lock PID file after dropping
privileges to a non-root account, which might allow local users to kill
arbitrary processes by leveraging access to this non-root account for
nagios.lock modification before a root script executes a "kill `cat
/pathname/nagios.lock`" command.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| nagios3 | 26.04 LTS resolute | Not in release |
| 25.10 questing | Not in release |
| 25.04 plucky | Not in release |
| 24.10 oracular | Not in release |
| 24.04 LTS noble | Not in release |
| 23.10 mantic | Not in release |
| 23.04 lunar | Not in release |
| 22.10 kinetic | Not in release |
| 22.04 LTS jammy | Not in release |
| 21.10 impish | Not in release |
| 21.04 hirsute | Not in release |
| 20.10 groovy | Not in release |
| 20.04 LTS focal | Not in release |
| 19.10 eoan | Not in release |
| 19.04 disco | Not in release |
| 18.10 cosmic | Not in release |
| 18.04 LTS bionic | Vulnerable |
| 17.10 artful | Ignored end of life |
| 17.04 zesty | Ignored end of life |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2017-12847?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| nagios3 | * Upstream:   [1b19734](https://github.com/NagiosEnterprises/nagioscore/commit/1b197346d490df2e2d3b1dcce5ac6134ad0c8752) * Upstream:   [3baffa7](https://github.com/orlitzky/nagioscore/commit/3baffa78bafebbbdf9f448890ba5a952ea2d73cb) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

6.3 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Local |
  | Attack complexity | High |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.3 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12847)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-12847)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-12847)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-12847)

### Other references

* <http://www.openwall.com/lists/oss-security/2017/08/16/7>
* <https://www.cve.org/CVERecord?id=CVE-2017-12847>