{"id":"UBUNTU-CVE-2017-3204","details":"The Go SSH library (x/crypto/ssh) by default does not verify host keys, facilitating man-in-the-middle attacks. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism.","modified":"2026-04-27T15:30:41.134347Z","published":"2017-04-04T14:59:00Z","upstream":["CVE-2017-3204"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-3204"},{"type":"REPORT","url":"https://bridge.grumpy-troll.org/2017/04/golang-ssh-security/"},{"type":"REPORT","url":"https://godoc.org/golang.org/x/crypto/ssh"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-3204"}],"affected":[{"package":{"name":"golang-go.crypto","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/golang-go.crypto@1:0.0~git20151201.0.7b85b09-2ubuntu0.1~esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.0~git20150608-1","1:0.0~git20151201.0.7b85b09-2","1:0.0~git20151201.0.7b85b09-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-go.crypto-dev","binary_version":"1:0.0~git20151201.0.7b85b09-2ubuntu0.1~esm1"},{"binary_name":"golang-golang-x-crypto-dev","binary_version":"1:0.0~git20151201.0.7b85b09-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3204.json"}},{"package":{"name":"snapd","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/snapd@2.61.4ubuntu0.16.04.1+esm2?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9","1.9.1.1","1.9.2","2.0","2.0.1","2.0.2","2.0.3","2.0.5","2.0.8","2.0.9","2.0.10","2.11+0.16.04","2.12+0.16.04","2.13","2.14.2~16.04","2.15.2ubuntu1","2.16ubuntu3","2.17.1ubuntu1","2.20.1ubuntu1","2.21","2.22.2","2.22.3","2.22.6","2.23.1","2.24.1","2.25","2.26.10","2.27.5","2.28.5","2.29.4.2","2.32.3.2","2.32.9","2.33.1ubuntu2","2.34.2","2.34.2ubuntu0.1","2.37.4","2.37.4ubuntu0.1","2.38","2.39.2","2.39.2ubuntu0.2","2.40","2.42.1","2.45.1","2.45.1ubuntu0.2","2.46.1","2.47.1","2.48","2.48.3","2.54.3+16.04~esm2","2.54.3+16.04.0ubuntu0.1~esm3","2.54.3+16.04.0ubuntu0.1~esm4","2.54.3+16.04.0ubuntu0.1~esm5","2.54.3+16.04.0ubuntu0.1~esm6","2.61.4ubuntu0.16.04.1+esm1","2.61.4ubuntu0.16.04.1+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-snapcore-snapd-dev","binary_version":"2.61.4ubuntu0.16.04.1+esm2"},{"binary_name":"golang-github-ubuntu-core-snappy-dev","binary_version":"2.61.4ubuntu0.16.04.1+esm2"},{"binary_name":"snap-confine","binary_version":"2.61.4ubuntu0.16.04.1+esm2"},{"binary_name":"snapd","binary_version":"2.61.4ubuntu0.16.04.1+esm2"},{"binary_name":"snapd-xdg-open","binary_version":"2.61.4ubuntu0.16.04.1+esm2"},{"binary_name":"ubuntu-core-launcher","binary_version":"2.61.4ubuntu0.16.04.1+esm2"},{"binary_name":"ubuntu-core-snapd-units","binary_version":"2.61.4ubuntu0.16.04.1+esm2"},{"binary_name":"ubuntu-snappy","binary_version":"2.61.4ubuntu0.16.04.1+esm2"},{"binary_name":"ubuntu-snappy-cli","binary_version":"2.61.4ubuntu0.16.04.1+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3204.json"}},{"package":{"name":"snapd","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/snapd@2.61.4ubuntu0.18.04.1+esm2?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.28.5+17.10","2.29.4.1+18.04","2.29.4.2+18.04","2.31.1+18.04","2.32+18.04~pre5","2.32+18.04~pre6","2.32+18.04","2.32.3.2+18.04","2.32.5+18.04","2.32.8+18.04","2.32.9+18.04","2.33.1+18.04ubuntu2","2.34.2+18.04","2.34.2+18.04.1","2.37.1+18.04","2.37.1.1+18.04","2.37.4+18.04","2.37.4+18.04.1","2.38+18.04","2.39.2+18.04","2.40+18.04","2.42.1+18.04","2.45.1+18.04","2.45.1+18.04.2","2.46.1+18.04","2.47.1+18.04","2.48+18.04","2.48.3+18.04","2.49.2+18.04","2.51.1+18.04","2.54.2+18.04ubuntu1","2.54.3+18.04","2.54.3+18.04.2ubuntu0.1","2.54.3+18.04.2ubuntu0.2","2.55.5+18.04","2.57.5+18.04","2.57.5+18.04ubuntu0.1","2.58+18.04","2.58+18.04.1","2.61.4ubuntu0.18.04.1+esm1","2.61.4ubuntu0.18.04.1+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-snapcore-snapd-dev","binary_version":"2.61.4ubuntu0.18.04.1+esm2"},{"binary_name":"golang-github-ubuntu-core-snappy-dev","binary_version":"2.61.4ubuntu0.18.04.1+esm2"},{"binary_name":"snap-confine","binary_version":"2.61.4ubuntu0.18.04.1+esm2"},{"binary_name":"snapd","binary_version":"2.61.4ubuntu0.18.04.1+esm2"},{"binary_name":"snapd-xdg-open","binary_version":"2.61.4ubuntu0.18.04.1+esm2"},{"binary_name":"ubuntu-core-launcher","binary_version":"2.61.4ubuntu0.18.04.1+esm2"},{"binary_name":"ubuntu-core-snapd-units","binary_version":"2.61.4ubuntu0.18.04.1+esm2"},{"binary_name":"ubuntu-snappy","binary_version":"2.61.4ubuntu0.18.04.1+esm2"},{"binary_name":"ubuntu-snappy-cli","binary_version":"2.61.4ubuntu0.18.04.1+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3204.json"}},{"package":{"name":"snapd","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/sna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