5 - USN-2278-1

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS - Ubuntu 13.10 - Ubuntu 12.04 LTS - Ubuntu 10.04 LTS

Summary:

File could be made to crash or hang if it processed specially crafted data.

Software Description: - file: Tool to determine file types

Details:

Mike Frysinger discovered that the file awk script detector used multiple wildcard with unlimited repetitions. An attacker could use this issue to cause file to consume resources, resulting in a denial of service. (CVE-2013-7345)

Francisco Alonso 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. (CVE-2014-0207, CVE-2014-3478, CVE-2014-3479, CVE-2014-3480, CVE-2014-3487)

Jan Kaluža discovered that file did not properly restrict the amount of data read during regex searches. An attacker could use this issue to cause file to consume resources, resulting in a denial of service. (CVE-2014-3538)

Update instructions:

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

Ubuntu 14.04 LTS:
file 1:5.14-2ubuntu3.1
libmagic1 1:5.14-2ubuntu3.1

Ubuntu 13.10:
file 5.11-2ubuntu4.3
libmagic1 5.11-2ubuntu4.3

Ubuntu 12.04 LTS:
file 5.09-2ubuntu0.4
libmagic1 5.09-2ubuntu0.4

Ubuntu 10.04 LTS:
file 5.03-5ubuntu1.3
libmagic1 5.03-5ubuntu1.3

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2278-1
CVE-2013-7345, CVE-2014-0207, CVE-2014-3478, CVE-2014-3479,
CVE-2014-3480, CVE-2014-3487, CVE-2014-3538

Package Information:
https://launchpad.net/ubuntu/+source/file/1:5.14-2ubuntu3.1
https://launchpad.net/ubuntu/+source/file/5.11-2ubuntu4.3
https://launchpad.net/ubuntu/+source/file/5.09-2ubuntu0.4
https://launchpad.net/ubuntu/+source/file/5.03-5ubuntu1.3