{"id":"UBUNTU-CVE-2020-14150","details":"GNU Bison before 3.5.4 allows attackers to cause a denial of service (application crash). NOTE: there is a risk only if Bison is used with untrusted input, and an observed bug happens to cause unsafe behavior with a specific compiler/architecture. The bug reports were intended to show that a crash may occur in Bison itself, not that a crash may occur in code that is generated by Bison.","modified":"2026-04-22T12:29:27.954870Z","published":"2020-06-15T17:15:00Z","upstream":["CVE-2020-14150"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-14150"},{"type":"REPORT","url":"https://lists.gnu.org/archive/html/info-gnu/2020-04/msg00000.html"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-14150"}],"affected":[{"package":{"name":"bison","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/bison@2:3.0.4.dfsg-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:3.0.2.dfsg-2","2:3.0.4.dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"bison","binary_version":"2:3.0.4.dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-14150.json"}},{"package":{"name":"bison","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/bison@2:3.0.4.dfsg-1build1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:3.0.4.dfsg-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"2:3.0.4.dfsg-1build1","binary_name":"bison"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-14150.json"}},{"package":{"name":"bison","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/bison@2:3.5.1+dfsg-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:3.4.1+dfsg-4","2:3.4.2+dfsg-1","2:3.5.1+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"bison","binary_version":"2:3.5.1+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-14150.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}