{"id":"UBUNTU-CVE-2016-10012","details":"The shared memory manager (associated with pre-authentication compression) in sshd in OpenSSH before 7.4 does not ensure that a bounds check is enforced by all compilers, which might allows local users to gain privileges by leveraging access to a sandboxed privilege-separation process, related to the m_zback and m_zlib data structures.","modified":"2026-06-01T07:15:29.417466570Z","published":"2017-01-04T00:00:00Z","related":["USN-3538-1"],"upstream":["CVE-2016-10012"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-10012"},{"type":"REPORT","url":"https://www.openssh.com/txt/release-7.4"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2016/12/19/2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3538-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-10012"}],"affected":[{"package":{"name":"openssh","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/openssh?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:6.6p1-2ubuntu2.10"}]}],"versions":["1:6.2p2-6","1:6.2p2-6ubuntu1","1:6.4p1-1","1:6.4p1-2","1:6.5p1-1","1:6.5p1-2","1:6.5p1-3","1:6.5p1-4","1:6.5p1-6","1:6.6p1-1","1:6.6p1-2","1:6.6p1-2ubuntu1","1:6.6p1-2ubuntu2","1:6.6p1-2ubuntu2.2","1:6.6p1-2ubuntu2.3","1:6.6p1-2ubuntu2.4","1:6.6p1-2ubuntu2.6","1:6.6p1-2ubuntu2.7","1:6.6p1-2ubuntu2.8"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"openssh-client","binary_version":"1:6.6p1-2ubuntu2.10"},{"binary_version":"1:6.6p1-2ubuntu2.10","binary_name":"openssh-server"},{"binary_name":"openssh-sftp-server","binary_version":"1:6.6p1-2ubuntu2.10"},{"binary_name":"ssh","binary_version":"1:6.6p1-2ubuntu2.10"},{"binary_name":"ssh-askpass-gnome","binary_version":"1:6.6p1-2ubuntu2.10"},{"binary_name":"ssh-krb5","binary_version":"1:6.6p1-2ubuntu2.10"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-10012.json"}},{"package":{"name":"openssh","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/openssh?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.2p2-4ubuntu2.4"}]}],"versions":["1:6.9p1-2","1:6.9p1-3","1:7.1p1-1","1:7.1p1-3","1:7.1p1-4","1:7.1p1-6","1:7.1p2-1","1:7.1p2-2","1:7.2p1-1","1:7.2p2-1","1:7.2p2-2","1:7.2p2-3","1:7.2p2-4","1:7.2p2-4ubuntu1","1:7.2p2-4ubuntu2.1","1:7.2p2-4ubuntu2.2"],"ecosystem_specific":{"binaries":[{"binary_name":"openssh-client","binary_version":"1:7.2p2-4ubuntu2.4"},{"binary_name":"openssh-client-ssh1","binary_version":"1:7.2p2-4ubuntu2.4"},{"binary_name":"openssh-server","binary_version":"1:7.2p2-4ubuntu2.4"},{"binary_name":"openssh-sftp-server","binary_version":"1:7.2p2-4ubuntu2.4"},{"binary_name":"ssh","binary_version":"1:7.2p2-4ubuntu2.4"},{"binary_name":"ssh-askpass-gnome","binary_version":"1:7.2p2-4ubuntu2.4"},{"binary_name":"ssh-krb5","binary_version":"1:7.2p2-4ubuntu2.4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-10012.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]}