{"id":"UBUNTU-CVE-2017-12132","details":"The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.","modified":"2026-04-22T11:11:36.106752Z","published":"2017-08-01T16:29:00Z","related":["USN-5768-1"],"upstream":["CVE-2017-12132"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12132"},{"type":"REPORT","url":"https://arxiv.org/pdf/1205.4011.pdf"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5768-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-12132"}],"affected":[{"package":{"name":"eglibc","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/eglibc@2.19-0ubuntu6.15+esm4?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.17-93ubuntu4","2.18-0ubuntu1","2.18-0ubuntu2","2.18-0ubuntu4","2.18-0ubuntu5","2.18-0ubuntu6","2.18-0ubuntu7","2.19-0ubuntu2","2.19-0ubuntu3","2.19-0ubuntu4","2.19-0ubuntu5","2.19-0ubuntu6","2.19-0ubuntu6.1","2.19-0ubuntu6.3","2.19-0ubuntu6.4","2.19-0ubuntu6.5","2.19-0ubuntu6.6","2.19-0ubuntu6.7","2.19-0ubuntu6.8","2.19-0ubuntu6.9","2.19-0ubuntu6.10","2.19-0ubuntu6.11","2.19-0ubuntu6.13","2.19-0ubuntu6.14","2.19-0ubuntu6.15","2.19-0ubuntu6.15+esm1","2.19-0ubuntu6.15+esm2","2.19-0ubuntu6.15+esm3","2.19-0ubuntu6.15+esm4"],"ecosystem_specific":{"binaries":[{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"eglibc-source"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc-bin"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc-dev-bin"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-amd64"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-armel"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-dev-amd64"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-dev-armel"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-dev-i386"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-dev-x32"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-i386"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-pic"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-prof"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-x32"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"multiarch-support"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"nscd"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-12132.json"}},{"package":{"name":"glibc","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/glibc@2.23-0ubuntu11.3+esm3?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.23-0ubuntu11.3+esm3"}]}],"versions":["2.21-0ubuntu4","2.21-0ubuntu5","2.21-0ubuntu6","2.23-0ubuntu1","2.23-0ubuntu2","2.23-0ubuntu3","2.23-0ubuntu4","2.23-0ubuntu5","2.23-0ubuntu6","2.23-0ubuntu7","2.23-0ubuntu9","2.23-0ubuntu10","2.23-0ubuntu11","2.23-0ubuntu11.2","2.23-0ubuntu11.3","2.23-0ubuntu11.3+esm1","2.23-0ubuntu11.3+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"glibc-source"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc-bin"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc-dev-bin"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6-amd64"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6-armel"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6-dev-amd64"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6-dev-armel"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6-dev-i386"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6-dev-s390"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6-dev-x32"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6-i386"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6-pic"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6-s390"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"libc6-x32"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"locales"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"locales-all"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"multiarch-support"},{"binary_version":"2.23-0ubuntu11.3+esm3","binary_name":"nscd"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-12132.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"low"}]}