---
title: CVE-2018-8741
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-2018-8741
---

# CVE-2018-8741

Publication date 17 March 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**8.8 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2018-8741#impact-score)

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## Description

A directory traversal flaw in SquirrelMail 1.4.22 allows an authenticated
attacker to exfiltrate (or potentially delete) files from the hosting
server, related to ../ in the att\_local\_name field in Deliver.class.php.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| squirrelmail | 19.04 disco | Not in release |
| 18.10 cosmic | Not in release |
| 18.04 LTS bionic | Not in release |
| 17.10 artful | Not in release |
| 16.04 LTS xenial | Fixed 2:1.4.23~svn20120406-2+deb8u3ubuntu0.16.04.1 |
| 14.04 LTS trusty | Fixed 2:1.4.23~svn20120406-2+deb8u3build0.14.04.1  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)

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## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

8.8 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.8 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8741)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-8741)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-8741)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-8741)

### Other references

* <http://www.openwall.com/lists/oss-security/2018/03/17/2>
* <https://gist.github.com/hannob/3c4f86863c418930ad08853c1109364e>
* <https://insinuator.net/2018/03/squirrelmail-full-disclosure-troopers18/>
* <https://paste.pound-python.org/show/OjSLiFTxiBrTk63jqEUu/>
* <https://www.cve.org/CVERecord?id=CVE-2018-8741>