{"id":"UBUNTU-CVE-2017-15650","details":"musl libc before 1.1.17 has a buffer overflow via crafted DNS replies because dns_parse_callback in network/lookup_name.c does not restrict the number of addresses, and thus an attacker can provide an unexpected number by sending A records in a reply to an AAAA query.","modified":"2026-04-22T11:18:54.490433Z","published":"2017-10-19T23:29:00Z","related":["USN-4768-1"],"upstream":["CVE-2017-15650"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-15650"},{"type":"REPORT","url":"https://git.musl-libc.org/cgit/musl/patch/?id=45ca5d3fcb6f874bf5ba55d0e9651cef68515395"},{"type":"REPORT","url":"http://git.musl-libc.org/cgit/musl/commit/?id=45ca5d3fcb6f874bf5ba55d0e9651cef68515395"},{"type":"REPORT","url":"http://git.musl-libc.org/cgit/musl/tree/WHATSNEW"},{"type":"REPORT","url":"http://openwall.com/lists/oss-security/2017/10/19/5"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-15650"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4768-1"}],"affected":[{"package":{"name":"musl","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/musl@1.1.9-1ubuntu0.1~esm2?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.9-1ubuntu0.1~esm2"}]}],"versions":["1.1.9-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"musl","binary_version":"1.1.9-1ubuntu0.1~esm2"},{"binary_name":"musl-tools","binary_version":"1.1.9-1ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-15650.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}