---
title: "CVE-2015-2059\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-2015-2059?format=md
keywords: index, follow
---

# CVE-2015-2059

Publication date 12 August 2015

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

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## Description

The stringprep\_utf8\_to\_ucs4 function in libin before 1.31, as used in
jabberd2, allows context-dependent attackers to read system memory and
possibly have other unspecified impact via invalid UTF-8 characters in a
string, which triggers an out-of-bounds read.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2015-2059?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libidn | 17.04 zesty | Not affected |
| 16.10 yakkety | Not affected |
| 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 | Fixed 1.28-1ubuntu2.1 |
| 12.04 LTS precise | Fixed 1.23-2ubuntu0.1 |
| 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)
* [Patch details](https://ubuntu.com/security/CVE-2015-2059?format=md#patch-details)

## Notes

---

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

libidn2-0 does not appear to implement stringprep.

---

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

This CVE was fixed in 1.31 and regression fixed in 1.32

### 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 |
| --- | --- |
| libidn | * Upstream:   [?id=2e9](http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=2e97c2796581c27213962c77f5a8571a598f9a2e) * Upstream:   [?id=58c](http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=58c721ac2dc96bccd737f3f544f3a22a50477bbf) |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2059)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2015-2059)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2015-2059)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2015-2059)

### Related Ubuntu Security Notices (USN)

+ [USN-3068-1](https://usn.ubuntu.com/USN-3068-1)
+ Libidn vulnerabilities
+ 24 August 2016

### Other references

* <http://www.openwall.com/lists/oss-security/2015/02/23/25>
* <https://lists.gnu.org/archive/html/help-libidn/2015-07/msg00026.html (regression)>
* <https://www.cve.org/CVERecord?id=CVE-2015-2059>