BackupPC could be made to expose sensitive information over the network.
It was discovered that BackupPC did not properly sanitize its input when processing backup browser 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. This issue did not affect Ubuntu 11.10. (CVE-2011-3361)
27 October 2011
A security issue affects these releases of Ubuntu and its derivatives:
BackupPC could be made to expose sensitive information over the network.
It was discovered that BackupPC did not properly sanitize its input when processing backup browser 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. This issue did not affect Ubuntu 11.10. (CVE-2011-3361)
Jamie Strandboge discovered that BackupPC did not properly sanitize its input when processing log file viewer error messages, resulting in cross-site scripting (XSS) vulnerabilities.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
Vulmon