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==========================================================================
Ubuntu Security Notice USN-2981-1
May 17, 2016

libarchive vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS
- Ubuntu 15.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

libarchive could be made to crash or run programs if it opened a specially
crafted file.

Software Description:
- libarchive: Library to read/write archive files

Details:

It was discovered that libarchive incorrectly handled certain entry-size
values in ZIP archives. A remote attacker could use this issue to cause
libarchive to crash, resulting in a denial of service, or possibly execute
arbitrary code. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 15.10
and Ubuntu 16.04 LTS. (CVE-2016-1541)

It was discovered that libarchive incorrectly handled memory when
processing certain tar files. A remote attacker could use this issue to
cause libarchive to crash, resulting in a denial of service. (CVE number
pending)

Update instructions:

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

Ubuntu 16.04 LTS:
  libarchive13                    3.1.2-11ubuntu0.16.04.1

Ubuntu 15.10:
  libarchive13                    3.1.2-11ubuntu0.15.10.1

Ubuntu 14.04 LTS:
  libarchive13                    3.1.2-7ubuntu2.2

Ubuntu 12.04 LTS:
  libarchive12                    3.0.3-6ubuntu1.2

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

References:
  http://www.ubuntu.com/usn/usn-2981-1
  CVE-2016-1541

Package Information:
  https://launchpad.net/ubuntu/+source/libarchive/3.1.2-11ubuntu0.16.04.1
  https://launchpad.net/ubuntu/+source/libarchive/3.1.2-11ubuntu0.15.10.1
  https://launchpad.net/ubuntu/+source/libarchive/3.1.2-7ubuntu2.2
  https://launchpad.net/ubuntu/+source/libarchive/3.0.3-6ubuntu1.2



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