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CVE-2011-4409

Status Candidate

Overview

The Ubuntu One Client for Ubuntu 10.04 LTS, 11.04, 11.10, and 12.04 LTS does not properly validate SSL certificates, which allows remote attackers to spoof a server and modify or read sensitive information via a man-in-the-middle (MITM) attack.

Related Files

Ubuntu Security Notice USN-1465-3
Posted Jun 6, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1465-3 - USN-1465-1 fixed vulnerabilities in Ubuntu One Client. The update failed to install on certain Ubuntu 10.04 LTS systems that had a legacy Python 2.5 package installed. This update fixes the problem. It was discovered that the Ubuntu One Client incorrectly validated server certificates when using HTTPS connections. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to alter or compromise confidential information. Various other issues were also addressed.

tags | advisory, remote, web, vulnerability, python
systems | linux, ubuntu
advisories | CVE-2011-4409
SHA-256 | 5c0afee4c4cf6f20c5072c02b401c558c85c7f6589dbc77daf0c51474d1c8b8f
Ubuntu Security Notice USN-1465-1
Posted Jun 6, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1465-1 - It was discovered that the Ubuntu One Client incorrectly validated server certificates when using HTTPS connections. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to alter or compromise confidential information.

tags | advisory, remote, web
systems | linux, ubuntu
advisories | CVE-2011-4409
SHA-256 | 4043575a28f3151a2c63c3f93da7f4ede5fdb9d43fbcd6804a4bde82d888ea74
Ubuntu Security Notice USN-1465-2
Posted Jun 6, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1465-2 - USN-1465-1 fixed a vulnerability in the Ubuntu One Client. This update adds a required fix to the Ubuntu One storage protocol library. It was discovered that the Ubuntu One Client incorrectly validated server certificates when using HTTPS connections. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to alter or compromise confidential information. Various other issues were also addressed.

tags | advisory, remote, web, protocol
systems | linux, ubuntu
advisories | CVE-2011-4409
SHA-256 | bfc4b1a4f40b1086e4a2f1209aef6c19231f1edd3f5e17263857e268a19058a8
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