A security issue affects these releases of Ubuntu and its
derivatives:
Ubuntu 14.04 LTS
Ubuntu 12.04 LTS
Summary
APT could be made to overwrite files.
Software description
apt
– Advanced front-end for dpkg
Details
Guillem Jover discovered that APT incorrectly created a temporary file when handling the changelog command. A local attacker could use this issue to overwrite arbitrary files. In the default installation of Ubuntu, this should be prevented by the kernel link restrictions.
Update instructions
The problem can be corrected by updating your system to the following
package version:
A security issue affects these releases of Ubuntu and its
derivatives:
Ubuntu 14.04 LTS
Ubuntu 12.04 LTS
Ubuntu 10.04 LTS
Summary
file could be made to crash or run programs as your login if it
opened a specially crafted file.
Software description
file
– Tool to determine file types
Details
It was discovered that file incorrectly handled certain CDF documents. A attacker could use this issue to cause file to hang or crash, resulting in a denial of service.
Update instructions
The problem can be corrected by updating your system to the following
package version:
A security issue affects these releases of Ubuntu and its
derivatives:
Ubuntu 12.04 LTS
Summary
OpenVPN could be made to expose sensitive information over the network.
Software description
openvpn
– virtual private network software
Details
It was discovered that OpenVPN incorrectly handled HMAC comparisons when running in UDP mode. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could possibly be used to perform a plaintext recovery attack.
Update instructions
The problem can be corrected by updating your system to the following
package version:
A security issue affects these releases of Ubuntu and its
derivatives:
Ubuntu 14.04 LTS
Ubuntu 12.04 LTS
Ubuntu 10.04 LTS
Summary
Rsyslog could be made to crash if it received specially crafted input.
Software description
rsyslog
– Enhanced syslogd
Details
It was discovered that Rsyslog incorrectly handled invalid PRI values. An attacker could use this issue to send malformed messages to the Rsyslog server and cause it to stop responding, resulting in a denial of service and possibly message loss. (CVE-2014-3634, CVE-2014-3683)
Update instructions
The problem can be corrected by updating your system to the following
package version: