{"id":"UBUNTU-CVE-2015-0837","details":"The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a \"Last-Level Cache Side-Channel Attack.\"","modified":"2026-04-22T10:05:39.228784Z","published":"2015-03-02T00:00:00Z","related":["USN-2554-1","USN-2555-1"],"upstream":["CVE-2015-0837"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-0837"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2554-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2555-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-0837"}],"affected":[{"package":{"name":"gnupg","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/gnupg@1.4.16-1ubuntu2.3?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.16-1ubuntu2.3"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.4.16-1ubuntu2.3","binary_name":"gnupg"},{"binary_version":"1.4.16-1ubuntu2.3","binary_name":"gnupg-curl"},{"binary_version":"1.4.16-1ubuntu2.3","binary_name":"gpgv"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-0837.json"}},{"package":{"name":"libgcrypt11","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libgcrypt11@1.5.3-2ubuntu4.2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.3-2ubuntu4.2"}]}],"versions":["1.5.0-3ubuntu3","1.5.3-2ubuntu1","1.5.3-2ubuntu4","1.5.3-2ubuntu4.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.5.3-2ubuntu4.2","binary_name":"libgcrypt11"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-0837.json"}},{"package":{"name":"libgcrypt20","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libgcrypt20@1.6.1-2ubuntu1.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1-2ubuntu1.14.04.1"}]}],"versions":["1.6.0-2","1.6.0-2ubuntu2","1.6.1-1","1.6.1-2","1.6.1-2ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.6.1-2ubuntu1.14.04.1","binary_name":"libgcrypt20"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-0837.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"low"}]}