Module::Signature before 0.74 allows remote attackers to execute arbitrary shell commands via a crafted SIGNATURE file which is not properly handled when generating checksums from a signed manifest.

Affected: Ubuntu:14.04:LTS: libmodule-signature-perl

John Lightsey discovered that Module::Signature incorrectly handled PGP signature boundaries. A remote attacker could use this issue to trick Module::Signature into parsing the unsigned portion of the SIGNATURE file as the signed portion. (CVE-2015-3406)

John Lightsey discovered that Module::Signature incorrectly handled files that were not listed in the SIGNATURE file. A remote attacker could use this flaw to execute arbitrary code when tests were run. (CVE-2015-3407)

John Lightsey discovered that Module::Signature incorrectly handled embedded shell commands in the SIGNATURE file. A remote attacker could use this issue to execute arbitrary code during signature verification. (CVE-2015-3408)

John Lightsey discovered that Module::Signature incorrectly handled module loading. A remote attacker could use this issue to execute arbitrary code during signature verification. (CVE-2015-3409)