---
title: "CVE-2018-11805\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-2018-11805?format=md
keywords: index, follow
---

# CVE-2018-11805

Publication date 12 December 2019

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**6.7 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2018-11805?format=md#impact-score)

Toggle side navigation

## Description

In Apache SpamAssassin before 3.4.3, nefarious CF files can be configured
to run system commands without any output or errors. With this, exploits
can be injected in a number of scenarios. In addition to upgrading to SA
3.4.3, we recommend that users should only use update channels or 3rd party
.cf files from trusted places.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| spamassassin | 19.10 eoan | Fixed 3.4.2-1ubuntu0.19.10.1 |
| 19.04 disco | Fixed 3.4.2-1ubuntu0.19.04.1 |
| 18.04 LTS bionic | Fixed 3.4.2-0ubuntu0.18.04.2 |
| 16.04 LTS xenial | Fixed 3.4.2-0ubuntu0.16.04.2 |
| 14.04 LTS trusty | Fixed 3.4.2-0ubuntu0.14.04.1+esm1  Ubuntu Pro |

---

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

### Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

[Get Ubuntu Pro](https://ubuntu.com/pro)
[30-day free trial](https://ubuntu.com/pro/free-trial)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

6.7 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.7 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11805)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-11805)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-11805)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-11805)

### Related Ubuntu Security Notices (USN)

+ [USN-4237-1](https://usn.ubuntu.com/USN-4237-1)
+ SpamAssassin vulnerabilities
+ 13 January 2020

+ [USN-4237-2](https://usn.ubuntu.com/USN-4237-2)
+ SpamAssassin vulnerabilities
+ 15 January 2020

### Other references

* <https://www.openwall.com/lists/oss-security/2019/12/12/1>
* <https://markmail.org/message/pyp425yrulfxyhrn>
* <http://www.openwall.com/lists/oss-security/2019/12/12/1>
* <https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7647>
* <https://lists.apache.org/thread.html/2946b38caec47f7f6a79e8e03d2aa723794186e59a7dc6b5e76dfc18@%3Cannounce.spamassassin.apache.org%3E>
* <https://lists.apache.org/thread.html/6f89f82a573ea616dce53ec67e52d963618a9f9ac71da5c1efdbd166@%3Cusers.spamassassin.apache.org%3E>
* <https://lists.apache.org/thread.html/bc58907171c6585e5875a3ce86066d4956c218911cb74e3156de4433@%3Cannounce.apache.org%3E>
* <https://lists.apache.org/thread.html/d015dc5b4f24fd6777a85d068502a9c5d58d69d877ed5b0eb9a22cd5@%3Cdev.spamassassin.apache.org%3E>
* <https://seclists.org/oss-sec/2019/q4/154>
* <https://svn.apache.org/repos/asf/spamassassin/branches/3.4/build/announcements/3.4.3.txt>
* <https://www.cve.org/CVERecord?id=CVE-2018-11805>