The read_block function in g10/import.c in GnuPG 1.4.x before 1.4.13 and 2.0.x through 2.0.19, when importing a key, allows remote attackers to corrupt the public keyring database or cause a denial of service (application crash) via a crafted length field of an OpenPGP packet.
git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git%3Ba=commitdiff%3Bh=f0b33b6fb8e0586e9584a7a409dcc31263776a67
lists.fedoraproject.org/pipermail/package-announce/2013-January/095513.html
lists.fedoraproject.org/pipermail/package-announce/2013-January/095516.html
rhn.redhat.com/errata/RHSA-2013-1459.html
www.mandriva.com/security/advisories?name=MDVSA-2013:001
www.openwall.com/lists/oss-security/2013/01/01/6
www.securityfocus.com/bid/57102
www.ubuntu.com/usn/USN-1682-1
bugs.g10code.com/gnupg/issue1455
bugzilla.redhat.com/show_bug.cgi?id=891142
exchange.xforce.ibmcloud.com/vulnerabilities/80990