{"id":"UBUNTU-CVE-2013-7423","details":"The send_dg function in resolv/res_send.c in GNU C Library (aka glibc or libc6) before 2.20 does not properly reuse file descriptors, which allows remote attackers to send DNS queries to unintended locations via a large number of requests that trigger a call to the getaddrinfo function.","modified":"2026-04-22T09:26:14.859045Z","published":"2015-02-24T00:00:00Z","related":["USN-2519-1"],"upstream":["CVE-2013-7423"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-7423"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2519-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2013-7423"}],"affected":[{"package":{"name":"eglibc","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/eglibc@2.19-0ubuntu6.6?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19-0ubuntu6.6"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_version":"2.19-0ubuntu6.6","binary_name":"eglibc-source"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc-bin"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc-dev-bin"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-amd64"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-armel"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-dev-amd64"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-dev-armel"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-dev-i386"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-dev-ppc64"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-dev-x32"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-i386"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-pic"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-ppc64"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-prof"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"libc6-x32"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"multiarch-support"},{"binary_version":"2.19-0ubuntu6.6","binary_name":"nscd"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2013/UBUNTU-CVE-2013-7423.json"}}],"schema_version":"1.7.5","severity":[{"type":"Ubuntu","score":"medium"}]}