---
title: "CVE-2017-7675\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-2017-7675?format=md
keywords: index, follow
---

# CVE-2017-7675

Publication date 11 August 2017

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2017-7675?format=md#impact-score)

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## Description

The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.0.M21 and 8.5.0
to 8.5.15 bypassed a number of security checks that prevented directory
traversal attacks. It was therefore possible to bypass security constraints
using a specially crafted URL.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2017-7675?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| tomcat7 | 17.04 zesty | Not affected |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not affected |
| tomcat8 | 17.04 zesty | Not affected |
| 16.04 LTS xenial | Not affected |
| 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)

## Notes

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

only 8.5.0 to 8.5.15

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7675)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-7675)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-7675)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-7675)

### Other references

* <https://lists.apache.org/thread.html/d3a5818e8af731bde6a05ef031ed3acc093c6dd7c4bfcc4936eafd6c@%3Cannounce.tomcat.apache.org%3E>
* <https://www.cve.org/CVERecord?id=CVE-2017-7675>