---
title: "CVE-2015-1868\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-2015-1868?format=md
keywords: index, follow
---

# CVE-2015-1868

Publication date 18 May 2015

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The label decompression functionality in PowerDNS Recursor 3.5.x, 3.6.x
before 3.6.3, and 3.7.x before 3.7.2 and Authoritative (Auth) Server 3.2.x,
3.3.x before 3.3.2, and 3.4.x before 3.4.4 allows remote attackers to cause
a denial of service (CPU consumption or crash) via a request with a name
that refers to itself.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2015-1868?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| pdns | 16.10 yakkety | Not affected |
| 16.04 LTS xenial | Not affected |
| 15.10 wily | Not affected |
| 15.04 vivid | Ignored end of life |
| 14.10 utopic | Ignored end of life |
| 14.04 LTS trusty | Fixed 3.3-2ubuntu0.1 |
| 12.04 LTS precise | Not affected |
| 10.04 LTS lucid | Ignored end of life |
| pdns-recursor | 16.10 yakkety | Not affected |
| 16.04 LTS xenial | Not affected |
| 15.10 wily | Not affected |
| 15.04 vivid | Fixed 3.6.2-2+deb8u2build0.15.04.1 |
| 14.10 utopic | Ignored end of life |
| 14.04 LTS trusty | Fixed 3.5.3-1ubuntu0.1 |
| 12.04 LTS precise | Not affected |
| 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)

## Notes

---

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

3.2+ pdns only, 3.5+ recursor only

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1868)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2015-1868)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2015-1868)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2015-1868)

### Other references

* <https://doc.powerdns.com/md/security/powerdns-advisory-2015-01/>
* <https://www.cve.org/CVERecord?id=CVE-2015-1868>