{"id":"UBUNTU-CVE-2019-11503","details":"snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the current working directory of the calling user, aka a \"cwd restore permission bypass.\"","modified":"2025-09-08T16:45:24Z","published":"2019-04-24T21:29:00Z","upstream":["CVE-2019-11503"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-11503"},{"type":"REPORT","url":"https://github.com/snapcore/snapd/pull/6642"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2019/04/18/4"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-11503"}],"affected":[{"package":{"name":"snapd","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/snapd@2.39.2ubuntu0.2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.39.2ubuntu0.2"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"golang-github-snapcore-snapd-dev","binary_version":"2.39.2ubuntu0.2"},{"binary_name":"golang-github-ubuntu-core-snappy-dev","binary_version":"2.39.2ubuntu0.2"},{"binary_name":"snap-confine","binary_version":"2.39.2ubuntu0.2"},{"binary_name":"snapd","binary_version":"2.39.2ubuntu0.2"},{"binary_name":"snapd-xdg-open","binary_version":"2.39.2ubuntu0.2"},{"binary_name":"ubuntu-core-launcher","binary_version":"2.39.2ubuntu0.2"},{"binary_name":"ubuntu-core-snapd-units","binary_version":"2.39.2ubuntu0.2"},{"binary_name":"ubuntu-snappy","binary_version":"2.39.2ubuntu0.2"},{"binary_name":"ubuntu-snappy-cli","binary_version":"2.39.2ubuntu0.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-11503.json"}},{"package":{"name":"snapd","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/snapd@2.39.2+18.04?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.39.2+18.04"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"golang-github-snapcore-snapd-dev","binary_version":"2.39.2+18.04"},{"binary_name":"golang-github-ubuntu-core-snappy-dev","binary_version":"2.39.2+18.04"},{"binary_name":"snap-confine","binary_version":"2.39.2+18.04"},{"binary_name":"snapd","binary_version":"2.39.2+18.04"},{"binary_name":"snapd-xdg-open","binary_version":"2.39.2+18.04"},{"binary_name":"ubuntu-core-launcher","binary_version":"2.39.2+18.04"},{"binary_name":"ubuntu-core-snapd-units","binary_version":"2.39.2+18.04"},{"binary_name":"ubuntu-snappy","binary_version":"2.39.2+18.04"},{"binary_name":"ubuntu-snappy-cli","binary_version":"2.39.2+18.04"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-11503.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"low"}]}