{"id":"UBUNTU-CVE-2020-12062","details":"The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory anywhere on the remote server. The victim must use the command scp -rp to download a file hierarchy containing, anywhere inside, this crafted subdirectory. NOTE: the vendor points out that \"this attack can achieve no more than a hostile peer is already able to achieve within the scp protocol\" and \"utimes does not fail under normal circumstances.","modified":"2026-09-16T14:00:55.889393357Z","published":"2020-06-01T16:15:00Z","upstream":["CVE-2020-12062"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12062"},{"type":"REPORT","url":"https://www.openssh.com/txt/release-8.3"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2020/05/27/1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-12062"}],"affected":[{"package":{"name":"openssh","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/openssh?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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","1:6.6p1-2ubuntu2.10","1:6.6p1-2ubuntu2.11","1:6.6p1-2ubuntu2.12","1:6.6p1-2ubuntu2.13","1:6.6p1-2ubuntu2.13+esm1","1:6.6p1-2ubuntu2.13+esm2","1:6.6p1-2ubuntu2.13+esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"openssh-client","binary_version":"1:6.6p1-2ubuntu2.13+esm3"},{"binary_name":"openssh-server","binary_version":"1:6.6p1-2ubuntu2.13+esm3"},{"binary_name":"openssh-sftp-server","binary_version":"1:6.6p1-2ubuntu2.13+esm3"},{"binary_version":"1:6.6p1-2ubuntu2.13+esm3","binary_name":"ssh"},{"binary_version":"1:6.6p1-2ubuntu2.13+esm3","binary_name":"ssh-askpass-gnome"},{"binary_version":"1:6.6p1-2ubuntu2.13+esm3","binary_name":"ssh-krb5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12062.json"}},{"package":{"name":"openssh","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/openssh?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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","1:7.2p2-4ubuntu2.4","1:7.2p2-4ubuntu2.5","1:7.2p2-4ubuntu2.6","1:7.2p2-4ubuntu2.7","1:7.2p2-4ubuntu2.8","1:7.2p2-4ubuntu2.10","1:7.2p2-4ubuntu2.10+esm1","1:7.2p2-4ubuntu2.10+esm2","1:7.2p2-4ubuntu2.10+esm3","1:7.2p2-4ubuntu2.10+esm4","1:7.2p2-4ubuntu2.10+esm5","1:7.2p2-4ubuntu2.10+esm6","1:7.2p2-4ubuntu2.10+esm7","1:7.2p2-4ubuntu2.10+esm8","1:7.2p2-4ubuntu2.10+esm9"],"ecosystem_specific":{"binaries":[{"binary_name":"openssh-client","binary_version":"1:7.2p2-4ubuntu2.10+esm9"},{"binary_version":"1:7.2p2-4ubuntu2.10+esm9","binary_name":"openssh-client-ssh1"},{"binary_name":"openssh-server","binary_version":"1:7.2p2-4ubuntu2.10+esm9"},{"binary_version":"1:7.2p2-4ubuntu2.10+esm9","binary_name":"openssh-sftp-server"},{"binary_version":"1:7.2p2-4ubuntu2.10+esm9","binary_name":"ssh"},{"binary_name":"ssh-askpass-gnome","binary_version":"1:7.2p2-4ubuntu2.10+esm9"},{"binary_name":"ssh-krb5","binary_version":"1:7.2p2-4ubuntu2.10+esm9"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12062.json"}},{"package":{"name":"openssh","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/openssh?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.5p1-10","1:7.6p1-4","1:7.6p1-4ubuntu0.1","1:7.6p1-4ubuntu0.2","1:7.6p1-4ubuntu0.3","1:7.6p1-4ubuntu0.5","1:7.6p1-4ubuntu0.6","1:7.6p1-4ubuntu0.7","1:7.6p1-4ubuntu0.7+esm1","1:7.6p1-4ubuntu0.7+esm2","1:7.6p1-4ubuntu0.7+esm3","1:7.6p1-4ubuntu0.7+esm4","1:7.6p1-4ubuntu0.7+esm5"],"ecosystem_specific":{"binaries":[{"binary_name":"openssh-client","binary_version":"1:7.6p1-4ubuntu0.7+esm5"},{"binary_name":"openssh-server","binary_version":"1:7.6p1-4ubuntu0.7+esm5"},{"binary_name":"openssh-sftp-server","binary_version":"1:7.6p1-4ubuntu0.7+esm5"},{"binary_name":"ssh","binary_version":"1:7.6p1-4ubuntu0.7+esm5"},{"binary_name":"ssh-askpass-gnome","binary_version":"1:7.6p1-4ubuntu0.7+esm5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12062.json"}},{"package":{"name":"openssh-ssh1","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/openssh-ssh1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.5p1-8","1:7.5p1-9","1:7.5p1-9build1","1:7.5p1-10"],"ecosystem_specific":{"binaries":[{"binary_name":"openssh-client-ssh1","binary_version":"1:7.5p1-10"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12062.json"}},{"package":{"name":"openssh","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/openssh?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:8.0p1-6build1","1:8.1p1-1","1:8.1p1-5","1:8.2p1-4","1:8.2p1-4ubuntu0.1","1:8.2p1-4ubuntu0.2","1:8.2p1-4ubuntu0.3","1:8.2p1-4ubuntu0.4","1:8.2p1-4ubuntu0.5","1:8.2p1-4ubuntu0.7","1:8.2p1-4ubuntu0.8","1:8.2p1-4ubuntu0.9","1:8.2p1-4ubuntu0.10","1:8.2p1-4ubuntu0.11","1:8.2p1-4ubuntu0.12","1:8.2p1-4ubuntu0.13","1:8.2p1-4ubuntu0.13+esm1","1:8.2p1-4ubuntu0.13+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"openssh-client","binary_version":"1:8.2p1-4ubuntu0.13+esm2"},{"binary_name":"openssh-server","binary_version":"1:8.2p1-4ubuntu0.13+esm2"},{"binary_name":"openssh-sftp-server","binary_version":"1:8.2p1-4ubuntu0.13+esm2"},{"binary_name":"openssh-tests","binary_version":"1:8.2p1-4ubuntu0.13+esm2"},{"binary_name":"ssh","binary_version":"1:8.2p1-4ubuntu0.13+esm2"},{"binary_name":"ssh-askpass-gnome","binary_version":"1:8.2p1-4ubuntu0.13+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12062.json"}},{"package":{"name":"openssh-ssh1","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/openssh-ssh1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.5p1-11build1"],"ecosystem_specific":{"binaries":[{"binary_name":"openssh-client-ssh1","binary_version":"1:7.5p1-11build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12062.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"negligible"}]}