---
title: "CVE-2008-1943\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-2008-1943?format=md
keywords: index, follow
---

# CVE-2008-1943

Publication date 14 May 2008

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

Buffer overflow in the backend of XenSource Xen Para Virtualized Frame
Buffer (PVFB) 3.0 through 3.1.2 allows local users to cause a denial of
service (crash) and possibly execute arbitrary code via a crafted
description of a shared framebuffer.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2008-1943?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| kvm | 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 9.10 karmic | Not in release |
| 9.04 jaunty | Not affected |
| 8.10 intrepid | Not affected |
| 8.04 LTS hardy | Not affected |
| 7.10 gutsy | Not affected |
| 7.04 feisty | Not affected |
| 6.06 LTS dapper | Not in release |
| qemu | 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 9.10 karmic | Not in release |
| 9.04 jaunty | Not affected |
| 8.10 intrepid | Not affected |
| 8.04 LTS hardy | Not affected |
| 7.10 gutsy | Not affected |
| 7.04 feisty | Not affected |
| 6.06 LTS dapper | Not affected |
| qemu-kvm | 11.10 oneiric | Not affected |
| 11.04 natty | Not affected |
| 10.10 maverick | Not affected |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Not affected |
| 9.04 jaunty | Not in release |
| 8.10 intrepid | Not in release |
| 8.04 LTS hardy | Not in release |
| 6.06 LTS dapper | Not in release |
| xen-3.0 | 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 9.10 karmic | Not in release |
| 9.04 jaunty | Not in release |
| 8.10 intrepid | Not in release |
| 8.04 LTS hardy | Not in release |
| 7.10 gutsy | Not in release |
| 7.04 feisty | Ignored end of life, was needed |
| 6.06 LTS dapper | Not in release |
| xen-3.1 | 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 9.10 karmic | Not in release |
| 9.04 jaunty | Not in release |
| 8.10 intrepid | Ignored end of life, was needed |
| 8.04 LTS hardy | Ignored end of life |
| 7.10 gutsy | Ignored end of life, was needed |
| 7.04 feisty | Not in release |
| 6.06 LTS dapper | Not in release |
| xen-3.2 | 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 9.10 karmic | Not in release |
| 9.04 jaunty | Not in release |
| 8.10 intrepid | Not in release |
| 8.04 LTS hardy | Ignored end of life |
| 7.10 gutsy | Not in release |
| 7.04 feisty | Not in release |
| 6.06 LTS dapper | Not in release |
| xen-3.3 | 11.10 oneiric | Not in release |
| 11.04 natty | Not affected |
| 10.10 maverick | Not affected |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Not affected |
| 9.04 jaunty | Not affected |
| 8.10 intrepid | Not affected |
| 8.04 LTS hardy | Not in release |
| 7.10 gutsy | Not in release |
| 7.04 feisty | Not in release |
| 6.06 LTS dapper | 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-2008-1943?format=md#patch-details)

## Notes

---

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

affects Xen 3.2 (and 3.2.1) too
code for 3.1 is in tools/xenfb/

---

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

additional checks for this in CVE-2008-1952
xen-pvfb-validate-fb.patch in RHEL5

### 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 |
| --- | --- |
| xen-3.2 | * Upstream:   <http://xenbits.xensource.com/xen-3.3-testing.hg?rev/53195719f762> * Vendor:   <https://bugzilla.redhat.com/attachment.cgi?id=302934> * Vendor:   <http://cvs.fedoraproject.org/viewvc//rpms/xen/F-9/xen-pvfb-validate-fb.patch?view=markup> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1943)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2008-1943)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2008-1943)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2008-1943)

### Other references

* <http://invisiblethingslab.com/pub/xenfb-adventures-10.pdf>
* <https://www.cve.org/CVERecord?id=CVE-2008-1943>
