Hanno Boeck and Marcin Noga discovered multiple vulnerabilities in libarchive; processing malformed archives may result in denial of service or the execution of arbitrary code.
For the stable distribution (jessie), these problems have been fixed in version 3.1.2-11+deb8u2.
For the testing distribution (stretch), these problems have been fixed in version 3.2.1-1.
For the unstable distribution (sid), these problems have been fixed in version 3.2.1-1.
We recommend that you upgrade your libarchive packages.
Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/