{"id":"UBUNTU-CVE-2016-2856","details":"pt_chown in the glibc package before 2.19-18+deb8u4 on Debian jessie; the elibc package before 2.15-0ubuntu10.14 on Ubuntu 12.04 LTS and before 2.19-0ubuntu6.8 on Ubuntu 14.04 LTS; and the glibc package before 2.21-0ubuntu4.2 on Ubuntu 15.10 and before 2.23-0ubuntu1 on Ubuntu 16.04 LTS and 16.10 lacks a namespace check associated with file-descriptor passing, which allows local users to capture keystrokes and spoof data, and possibly gain privileges, via pts read and write operations, related to debian/sysdeps/linux.mk.  NOTE: this is not considered a vulnerability in the upstream GNU C Library because the upstream documentation has a clear security recommendation against the --enable-pt_chown option.","modified":"2026-04-22T10:39:38.625471Z","published":"2016-03-13T00:00:00Z","related":["USN-2985-1"],"upstream":["CVE-2016-2856"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-2856"},{"type":"REPORT","url":"http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=09f7764882a81e13e7b5d87d715412283a6ce403"},{"type":"REPORT","url":"http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=11475c083282c1582c4dd72eecfcb2b7d308c958"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2016/03/07/2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2985-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-2856"}],"affected":[{"package":{"name":"eglibc","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/eglibc@2.19-0ubuntu6.8?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19-0ubuntu6.8"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"eglibc-source","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc-bin","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc-dev-bin","binary_version":"2.19-0ubuntu6.8"},{"binary_version":"2.19-0ubuntu6.8","binary_name":"libc6"},{"binary_name":"libc6-amd64","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc6-armel","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc6-dev-amd64","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc6-dev-armel","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc6-dev-i386","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc6-dev-ppc64","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc6-dev-x32","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc6-i386","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc6-pic","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc6-ppc64","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc6-prof","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"libc6-x32","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"multiarch-support","binary_version":"2.19-0ubuntu6.8"},{"binary_name":"nscd","binary_version":"2.19-0ubuntu6.8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2856.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}