---
title: "CVE-2018-1000652\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-2018-1000652?format=md
keywords: index, follow
---

# CVE-2018-1000652

Publication date 20 August 2018

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**10.0 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2018-1000652?format=md#impact-score)

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## Description

JabRef version <=4.3.1 contains a XML External Entity (XXE) vulnerability
in MsBibImporter XML Parser that can result in disclosure of confidential
data, denial of service, server side request forgery, port scanning. This
attack appear to be exploitable via Specially crafted MsBib file. This
vulnerability appears to have been fixed in after commit 89f855d.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| jabref | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Fixed 3.8.2+ds-12~18.04 |
| 18.04 LTS bionic | Fixed 3.8.2+ds-12~18.04 |
| 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)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

10.0 · Critical

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 10.0 · Critical |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000652)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-1000652)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-1000652)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-1000652)

### Other references

* <https://github.com/JabRef/jabref/issues/4229>
* <https://github.com/JabRef/jabref/commit/89f855d76713b4cd25ac0830c719cd61c511851e>
* <https://0dd.zone/2018/08/08/JabRef-XXE/>
* <https://www.cve.org/CVERecord?id=CVE-2018-1000652>