GnuPG, also known as GPG, is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP). GnuPG allows users to encrypt and sign data and communications.
GnuPG version 2.2.8 released earlier this month addresses the CVE-2018-12020 vulnerability, dubbed SigSpoof, affecting GnuPG, Enigmail, GPGTools, and python-gnupg.
“The signature verification routine in Enigmail 2.0.6.1, GPGTools 2018.2, and python-gnupg 0.4.2 parse the output of GnuPG 2.2.6 with a ‘–status-fd 2’ option, which allows remote attackers to spoof arbitrary signatures via the embedded ‘filename’ parameter in OpenPGP literal data packets, if the user has the verbose option set in their gpg.conf file,” reads the blog post published by Marcus Brinkmann who discovered the SigSpoof flaw.
