Ubuntu Security Notice 1444-1 - It was discovered that BackupPC did not properly sanitize its input when processing RestoreFile error messages, resulting in a cross-site scripting (XSS) vulnerability. With cross-site scripting vulnerabilities, if a user were tricked into viewing server output during a crafted server request, a remote attacker could exploit this to modify the contents, or steal confidential data, within the same domain.
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Ubuntu Security Notice USN-1444-1
May 17, 2012
backuppc vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
Summary:
BackupPC could be made to expose sensitive information over the network.
Software Description:
- backuppc: high-performance, enterprise-grade system for backing up PCs
Details:
It was discovered that BackupPC did not properly sanitize its input when
processing RestoreFile error messages, resulting in a cross-site
scripting (XSS) vulnerability. With cross-site scripting vulnerabilities,
if a user were tricked into viewing server output during a crafted server
request, a remote attacker could exploit this to modify the contents, or
steal confidential data, within the same domain.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
backuppc 3.2.1-2ubuntu1.1
Ubuntu 11.10:
backuppc 3.2.1-1ubuntu1.2
Ubuntu 11.04:
backuppc 3.2.0-3ubuntu4.3
Ubuntu 10.04 LTS:
backuppc 3.1.0-9ubuntu1.3
Ubuntu 8.04 LTS:
backuppc 3.0.0-4ubuntu1.4
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1444-1
CVE-2011-5081
Package Information:
https://launchpad.net/ubuntu/+source/backuppc/3.2.1-2ubuntu1.1
https://launchpad.net/ubuntu/+source/backuppc/3.2.1-1ubuntu1.2
https://launchpad.net/ubuntu/+source/backuppc/3.2.0-3ubuntu4.3
https://launchpad.net/ubuntu/+source/backuppc/3.1.0-9ubuntu1.3
https://launchpad.net/ubuntu/+source/backuppc/3.0.0-4ubuntu1.4