---
title: "CVE-2015-2157\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-2015-2157?format=md
keywords: index, follow
---

# CVE-2015-2157

Publication date 27 March 2015

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

Toggle side navigation

## Description

The (1) ssh2\_load\_userkey and (2) ssh2\_save\_userkey functions in PuTTY 0.51
through 0.63 do not properly wipe SSH-2 private keys from memory, which
allows local users to obtain sensitive information by reading the memory.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| putty | 17.04 zesty | Not affected |
| 16.10 yakkety | Not affected |
| 16.04 LTS xenial | Not affected |
| 15.10 wily | Not affected |
| 15.04 vivid | Not affected |
| 14.10 utopic | Fixed 0.63-8ubuntu0.1 |
| 14.04 LTS trusty | Fixed 0.63-4ubuntu0.1 |
| 12.04 LTS precise | Ignored end of life |
| 10.04 LTS lucid | Ignored end of life |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2157)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2015-2157)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2015-2157)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2015-2157)

### Other references

* <http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/private-key-not-wiped-2.html>
* <https://www.cve.org/CVERecord?id=CVE-2015-2157>