{"id":"UBUNTU-CVE-2020-6750","details":"GSocketClient in GNOME GLib through 2.62.4 may occasionally connect directly to a target address instead of connecting via a proxy server when configured to do so, because the proxy_addr field is mishandled. This bug is timing-dependent and may occur only sporadically depending on network delays. The greatest security relevance is in use cases where a proxy is used to help with privacy/anonymity, even though there is no technical barrier to a direct connection. NOTE: versions before 2.60 are unaffected.","modified":"2025-07-16T08:25:42.167822Z","published":"2020-01-09T20:15:00Z","withdrawn":"2025-07-18T16:45:43Z","upstream":["CVE-2020-6750"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-6750"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-6750"}],"affected":[{"package":{"name":"glib2.0","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/glib2.0@2.48.2-0ubuntu4.4?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.48.2-0ubuntu4.4"}]}],"versions":["2.46.1-1","2.46.1-2","2.47.1-1","2.47.3-3","2.47.4-1","2.47.5-1","2.47.6-1","2.48.0-1ubuntu3","2.48.0-1ubuntu4","2.48.1-1~ubuntu16.04.1","2.48.2-0ubuntu1","2.48.2-0ubuntu3","2.48.2-0ubuntu4","2.48.2-0ubuntu4.1","2.48.2-0ubuntu4.2","2.48.2-0ubuntu4.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libglib2.0-0","binary_version":"2.48.2-0ubuntu4.4"},{"binary_version":"2.48.2-0ubuntu4.4","binary_name":"libglib2.0-0-dbg"},{"binary_name":"libglib2.0-0-dbgsym","binary_version":"2.48.2-0ubuntu4.4"},{"binary_name":"libglib2.0-0-refdbg","binary_version":"2.48.2-0ubuntu4.4"},{"binary_version":"2.48.2-0ubuntu4.4","binary_name":"libglib2.0-0-refdbg-dbgsym"},{"binary_name":"libglib2.0-bin","binary_version":"2.48.2-0ubuntu4.4"},{"binary_name":"libglib2.0-bin-dbgsym","binary_version":"2.48.2-0ubuntu4.4"},{"binary_version":"2.48.2-0ubuntu4.4","binary_name":"libglib2.0-data"},{"binary_name":"libglib2.0-dev","binary_version":"2.48.2-0ubuntu4.4"},{"binary_name":"libglib2.0-dev-dbgsym","binary_version":"2.48.2-0ubuntu4.4"},{"binary_name":"libglib2.0-doc","binary_version":"2.48.2-0ubuntu4.4"},{"binary_name":"libglib2.0-tests","binary_version":"2.48.2-0ubuntu4.4"},{"binary_name":"libglib2.0-tests-dbgsym","binary_version":"2.48.2-0ubuntu4.4"},{"binary_version":"2.48.2-0ubuntu4.4","binary_name":"libglib2.0-udeb"},{"binary_name":"libglib2.0-udeb-dbgsym","binary_version":"2.48.2-0ubuntu4.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-6750.json"}},{"package":{"name":"glib2.0","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/glib2.0@2.56.4-0ubuntu0.18.04.4?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.56.4-0ubuntu0.18.04.4"}]}],"versions":["2.54.1-1ubuntu1","2.55.2-2ubuntu1","2.56.0-2ubuntu1","2.56.0-4ubuntu1","2.56.1-2ubuntu1","2.56.2-0ubuntu0.18.04.1","2.56.2-0ubuntu0.18.04.2","2.56.3-0ubuntu0.18.04.1","2.56.4-0ubuntu0.18.04.2","2.56.4-0ubuntu0.18.04.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libglib2.0-0","binary_version":"2.56.4-0ubuntu0.18.04.4"},{"binary_name":"libglib2.0-0-dbgsym","binary_version":"2.56.4-0ubuntu0.18.04.4"},{"binary_name":"libglib2.0-bin","binary_version":"2.56.4-0ubuntu0.18.04.4"},{"binary_name":"libglib2.0-bin-dbgsym","binary_version":"2.56.4-0ubuntu0.18.04.4"},{"binary_name":"libglib2.0-data","binary_version":"2.56.4-0ubuntu0.18.04.4"},{"binary_name":"libglib2.0-dev","binary_version":"2.56.4-0ubuntu0.18.04.4"},{"binary_name":"libglib2.0-dev-bin","binary_version":"2.56.4-0ubuntu0.18.04.4"},{"binary_name":"libglib2.0-dev-bin-dbgsym","binary_version":"2.56.4-0ubuntu0.18.04.4"},{"binary_name":"libglib2.0-doc","binary_version":"2.56.4-0ubuntu0.18.04.4"},{"binary_name":"libglib2.0-tests","binary_version":"2.56.4-0ubuntu0.18.04.4"},{"binary_name":"libglib2.0-tests-dbgsym","binary_version":"2.56.4-0ubuntu0.18.04.4"},{"binary_name":"libglib2.0-udeb","binary_version":"2.56.4-0ubuntu0.18.04.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-6750.json"}},{"package":{"name":"glib2.0","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/glib2.0@2.64.1-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.64.1-1"}]}],"versions":["2.62.1-1","2.63.1-2","2.63.1-2ubuntu1","2.63.3-1","2.63.3-3","2.63.5-2","2.64.0-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libglib2.0-0","binary_version":"2.64.1-1"},{"binary_name":"libglib2.0-0-dbgsym","binary_version":"2.64.1-1"},{"binary_name":"libglib2.0-bin","binary_version":"2.64.1-1"},{"binary_name":"libglib2.0-bin-dbgsym","binary_version":"2.64.1-1"},{"binary_name":"libglib2.0-data","binary_version":"2.64.1-1"},{"binary_name":"libglib2.0-dev","binary_version":"2.64.1-1"},{"binary_name":"libglib2.0-dev-bin","binary_version":"2.64.1-1"},{"binary_name":"libglib2.0-dev-bin-dbgsym","binary_version":"2.64.1-1"},{"binary_name":"libglib2.0-doc","binary_version":"2.64.1-1"},{"binary_name":"libglib2.0-tests","binary_version":"2.64.1-1"},{"binary_version":"2.64.1-1","binary_name":"libglib2.0-tests-dbgsym"},{"binary_version":"2.64.1-1","binary_name":"libglib2.0-udeb"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-6750.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"low"}]}