---
title: "CVE-2017-7375\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-2017-7375?format=md
keywords: index, follow
---

# CVE-2017-7375

Publication date 21 June 2017

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2017-7375?format=md#impact-score)

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## Description

A flaw in libxml2 allows remote XML entity inclusion with default parser
flags (i.e., when the caller did not request entity substitution, DTD
validation, external DTD subset loading, or default DTD attributes).
Depending on the context, this may expose a higher-risk attack surface in
libxml2 not usually reachable with default parser flags, and expose content
from local files, HTTP, or FTP servers (which might be otherwise
unreachable).

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libxml2 | 17.04 zesty | Fixed 2.9.4+dfsg1-2.2ubuntu0.1 |
| 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Fixed 2.9.3+dfsg1-1ubuntu0.3 |
| 14.04 LTS trusty | Fixed 2.9.1+dfsg1-3ubuntu4.10 |

---

* [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-2017-7375?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 |
| --- | --- |
| libxml2 | * Distro:   <https://android.googlesource.com/platform/external/libxml2/+/308396a55280f69ad4112d4f9892f4cbeff042aa> * Upstream:   [?id=90c](https://git.gnome.org/browse/libxml2/commit/?id=90ccb58242866b0ba3edbef8fe44214a101c2b3e) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.8 · Critical

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.8 · Critical |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7375)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-7375)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-7375)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-7375)

### Related Ubuntu Security Notices (USN)

+ [USN-3424-1](https://usn.ubuntu.com/USN-3424-1)
+ libxml2 vulnerabilities
+ 19 September 2017

+ [USN-3424-2](https://usn.ubuntu.com/USN-3424-2)
+ libxml2 vulnerabilities
+ 10 October 2017

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2017-7375>