---
title: "CVE-2015-1027\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-2015-1027?format=md
keywords: index, follow
---

# CVE-2015-1027

Publication date 29 September 2017

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**5.9 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2015-1027?format=md#impact-score)

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## Description

The version checking subroutine in percona-toolkit before 2.2.13 and
xtrabackup before 2.2.9 was vulnerable to silent HTTP downgrade attacks and
Man In The Middle attacks in which the server response could be modified to
allow the attacker to respond with modified command payload and have the
client return additional running configuration information leading to an
information disclosure of running configuration of MySQL.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2015-1027?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| percona-toolkit | 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Ignored end of life |
| 17.04 zesty | Ignored end of life |
| 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Not affected |
| 15.10 wily | Ignored end of life |
| 15.04 vivid | Ignored end of life |
| 14.10 utopic | Ignored end of life |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Ignored end of life |
| 10.04 LTS lucid | Not in release |
| percona-xtrabackup | 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Ignored end of life |
| 17.04 zesty | Ignored end of life |
| 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Not affected |
| 15.10 wily | Ignored end of life |
| 15.04 vivid | Ignored end of life |
| 14.10 utopic | Ignored end of life |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Not in release |
| 10.04 LTS lucid | 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)
* [Patch details](https://ubuntu.com/security/CVE-2015-1027?format=md#patch-details)

## Notes

---

### [seth-arnold](https://launchpad.net/~seth-arnold)

Debian notes this version check is disabled, it may be disabled in
our packages too

### 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 |
| --- | --- |
| percona-toolkit | * Other:   <https://build.opensuse.org/package/view_file/openSUSE:13.1:Update/xtrabackup/percona-xtrabackup-CVE-2015-1027.patch?expand=1> |
| percona-xtrabackup | * Other:   <https://build.opensuse.org/package/view_file/openSUSE:13.1:Update/xtrabackup/percona-xtrabackup-CVE-2015-1027.patch?expand=1> |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.9 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.9 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1027)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2015-1027)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2015-1027)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2015-1027)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2015-1027>