---
title: 'USN-728-3: Firefox vulnerabilities | Ubuntu security notices'
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/notices/USN-728-3
---

1. [Ubuntu Security Notices](https://ubuntu.com/security/notices)
2. USN-728-3

---

# USN-728-3: Firefox vulnerabilities

Publication date

6 March 2009

Overview

Firefox vulnerabilities

Releases

[6.06](https://ubuntu.com/security/notices?release=dapper)

---

Open side navigation

## Packages

* [firefox](https://ubuntu.com/security/cves?package=firefox) -

## Details

Jesse Ruderman and Gary Kwong discovered flaws in the browser engine.
If a user were tricked into viewing a malicious website, a remote
attacker could cause a denial of service or possibly execute arbitrary
code with the privileges of the user invoking the program.
([CVE-2009-0772](https://ubuntu.com/security/CVE-2009-0772), [CVE-2009-0774](https://ubuntu.com/security/CVE-2009-0774))

Georgi Guninski discovered a flaw when Firefox performed a
cross-domain redirect. An attacker could bypass the same-origin policy
in Firefox by utilizing nsIRDFService and steal private data from
users authenticated to the redirected website. ([CVE-2009-0776](https://ubuntu.com/security/CVE-2009-0776))

## Update instructions

After a standard system upgrade you need to restart Firefox to effect the
necessary changes.

[Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security)

The problem can be corrected by updating your system to the following package versions:

| Ubuntu Release | Package Version |
| --- | --- |
| 6.06 dapper | [firefox](https://launchpad.net/ubuntu/+source/firefox) –  [1.5.dfsg+1.5.0.15~prepatch080614k-0ubuntu1](https://launchpad.net/ubuntu/+source/firefox/1.5.dfsg+1.5.0.15~prepatch080614k-0ubuntu1) | | |

---

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## References

* [CVE-2009-0776](https://ubuntu.com/security/CVE-2009-0776)
* [CVE-2009-0774](https://ubuntu.com/security/CVE-2009-0774)
* [CVE-2009-0772](https://ubuntu.com/security/CVE-2009-0772)

## Related notices

* [USN-741-1](https://ubuntu.com/security/notices/USN-741-1)
* [USN-728-2](https://ubuntu.com/security/notices/USN-728-2)
* [USN-728-1](https://ubuntu.com/security/notices/USN-728-1)