{"id":"UBUNTU-CVE-2019-14855","details":"A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.","modified":"2026-05-20T16:03:43.215669155Z","published":"2020-03-20T16:15:00Z","related":["USN-4516-1"],"upstream":["CVE-2019-14855"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-14855"},{"type":"REPORT","url":"https://eprint.iacr.org/2020/014.pdf"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4516-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-14855"}],"affected":[{"package":{"name":"gnupg","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/gnupg?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.14-1ubuntu2","1.4.15-1.1ubuntu1","1.4.15-1.1ubuntu2","1.4.15-2ubuntu1","1.4.16-1ubuntu1","1.4.16-1ubuntu2","1.4.16-1ubuntu2.1","1.4.16-1ubuntu2.3","1.4.16-1ubuntu2.4","1.4.16-1ubuntu2.5","1.4.16-1ubuntu2.6","1.4.16-1ubuntu2.6+esm1","1.4.16-1ubuntu2.6+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.4.16-1ubuntu2.6+esm2","binary_name":"gnupg"},{"binary_name":"gnupg-curl","binary_version":"1.4.16-1ubuntu2.6+esm2"},{"binary_name":"gpgv","binary_version":"1.4.16-1ubuntu2.6+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"}},{"package":{"name":"gnupg","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/gnupg?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.18-7ubuntu1","1.4.19-6ubuntu1","1.4.20-1ubuntu1","1.4.20-1ubuntu2","1.4.20-1ubuntu3","1.4.20-1ubuntu3.1","1.4.20-1ubuntu3.2","1.4.20-1ubuntu3.3","1.4.20-1ubuntu3.3+esm2","1.4.20-1ubuntu3.3+esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"gnupg","binary_version":"1.4.20-1ubuntu3.3+esm3"},{"binary_version":"1.4.20-1ubuntu3.3+esm3","binary_name":"gnupg-curl"},{"binary_name":"gpgv","binary_version":"1.4.20-1ubuntu3.3+esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"}},{"package":{"name":"gnupg2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/gnupg2?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.28-3ubuntu1","2.0.28-3ubuntu2","2.1.11-6ubuntu1","2.1.11-6ubuntu2","2.1.11-6ubuntu2.1","2.1.11-6ubuntu2.1+esm1","2.1.11-6ubuntu2.1+esm2","2.1.11-6ubuntu2.1+esm3"],"ecosystem_specific":{"binaries":[{"binary_version":"2.1.11-6ubuntu2.1+esm3","binary_name":"dirmngr"},{"binary_name":"gnupg-agent","binary_version":"2.1.11-6ubuntu2.1+esm3"},{"binary_name":"gnupg2","binary_version":"2.1.11-6ubuntu2.1+esm3"},{"binary_name":"gpgsm","binary_version":"2.1.11-6ubuntu2.1+esm3"},{"binary_version":"2.1.11-6ubuntu2.1+esm3","binary_name":"gpgv2"},{"binary_name":"scdaemon","binary_version":"2.1.11-6ubuntu2.1+esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"}},{"package":{"name":"gnupg2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/gnupg2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.4-1ubuntu1.3"}]}],"versions":["2.1.15-1ubuntu8","2.2.4-1ubuntu1","2.2.4-1ubuntu1.1","2.2.4-1ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_name":"dirmngr","binary_version":"2.2.4-1ubuntu1.3"},{"binary_name":"gnupg","binary_version":"2.2.4-1ubuntu1.3"},{"binary_version":"2.2.4-1ubuntu1.3","binary_name":"gnupg-agent"},{"binary_version":"2.2.4-1ubuntu1.3","binary_name":"gnupg-l10n"},{"binary_version":"2.2.4-1ubuntu1.3","binary_name":"gnupg-utils"},{"binary_name":"gnupg2","binary_version":"2.2.4-1ubuntu1.3"},{"binary_version":"2.2.4-1ubuntu1.3","binary_name":"gpg"},{"binary_name":"gpg-agent","binary_version":"2.2.4-1ubuntu1.3"},{"binary_name":"gpg-wks-client","binary_version":"2.2.4-1ubuntu1.3"},{"binary_version":"2.2.4-1ubuntu1.3","binary_name":"gpg-wks-server"},{"binary_name":"gpgconf","binary_version":"2.2.4-1ubuntu1.3"},{"binary_name":"gpgsm","binary_version":"2.2.4-1ubuntu1.3"},{"binary_version":"2.2.4-1ubuntu1.3","binary_name":"gpgv"},{"binary_name":"gpgv-static","binary_version":"2.2.4-1ubuntu1.3"},{"binary_version":"2.2.4-1ubuntu1.3","binary_name":"gpgv-win32"},{"binary_name":"gpgv2","binary_version":"2.2.4-1ubuntu1.3"},{"binary_version":"2.2.4-1ubuntu1.3","binary_name":"scdaemon"}],"availability":"No 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