---
title: "CVE-2017-12163\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-2017-12163?format=md
keywords: index, follow
---

# CVE-2017-12163

Publication date 20 September 2017

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.1 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2017-12163?format=md#impact-score)

Toggle side navigation

## Description

An information leak flaw was found in the way SMB1 protocol was implemented
by Samba before 4.4.16, 4.5.x before 4.5.14, and 4.6.x before 4.6.8. A
malicious client could use this flaw to dump server memory contents to a
file on the samba share or to a shared printer, though the exact area of
server memory cannot be controlled by the attacker.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| samba | 17.10 artful | Fixed 2:4.6.7+dfsg-1ubuntu3 |
| 17.04 zesty | Fixed 2:4.5.8+dfsg-0ubuntu0.17.04.7 |
| 16.04 LTS xenial | Fixed 2:4.3.11+dfsg-0ubuntu0.16.04.11 |
| 14.04 LTS trusty | Fixed 2:4.3.11+dfsg-0ubuntu0.14.04.12 |

---

* [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-2017-12163?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 |
| --- | --- |
| samba | * Upstream:   <https://git.samba.org/?p=samba.git;a=commit;h=bf85c3d4ed7a4f1a0be4e16faf5d9b562940d33d> * Upstream:   <https://git.samba.org/?p=samba.git;a=commit;h=a43b36f5514de38b8a072bfbeb172316045c2ad0> * Upstream:   <https://git.samba.org/?p=samba.git;a=commit;h=c848b104aa2293f55c14722d99cf788dafc442cb> |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.1 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.1 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12163)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-12163)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-12163)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-12163)

### Related Ubuntu Security Notices (USN)

+ [USN-3426-2](https://usn.ubuntu.com/USN-3426-2)
+ Samba vulnerabilities
+ 2 November 2017

+ [USN-3426-1](https://usn.ubuntu.com/USN-3426-1)
+ Samba vulnerabilities
+ 21 September 2017

### Other references

* <https://www.samba.org/samba/security/CVE-2017-12163.html>
* <https://www.cve.org/CVERecord?id=CVE-2017-12163>