{"id":"UBUNTU-CVE-2025-32743","details":"In ConnMan through 1.44, the lookup string in ns_resolv in dnsproxy.c can be NULL or an empty string when the TC (Truncated) bit is set in a DNS response. This allows attackers to cause a denial of service (application crash) or possibly execute arbitrary code, because those lookup values lead to incorrect length calculations and incorrect memcpy operations.","modified":"2026-05-20T16:21:23.548512386Z","published":"2025-04-10T14:15:00Z","upstream":["CVE-2025-32743"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-32743"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-32743"},{"type":"REPORT","url":"https://lapis-sawfish-be3.notion.site/0-click-Vulnerability-in-Comman-1-43_v3-1cadc00d01d080b0b3b9c46a6da584cc"},{"type":"REPORT","url":"https://web.git.kernel.org/pub/scm/network/connman/connman.git/tree/src/dnsproxy.c?h=1.44#n1688"}],"affected":[{"package":{"name":"connman","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/connman?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.21-1.2","1.21-1.2build1","1.21-1.2build2","1.21-1.2+deb8u1build0.16.04.1","1.21-1.2+deb8u1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.21-1.2+deb8u1ubuntu0.1~esm1","binary_name":"connman"},{"binary_version":"1.21-1.2+deb8u1ubuntu0.1~esm1","binary_name":"connman-vpn"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-32743.json"}},{"package":{"name":"connman","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/connman?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.35-1","1.35-2","1.35-6","1.35-6ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"connman","binary_version":"1.35-6ubuntu0.1~esm1"},{"binary_version":"1.35-6ubuntu0.1~esm1","binary_name":"connman-vpn"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-32743.json"}},{"package":{"name":"connman","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/connman?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.36-2build1","1.36-2ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"connman","binary_version":"1.36-2ubuntu0.1"},{"binary_name":"connman-vpn","binary_version":"1.36-2ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-32743.json"}},{"package":{"name":"connman","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/connman?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.36-2.2build1","1.36-2.3","1.36-2.3build1","1.36-2.3ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"connman","binary_version":"1.36-2.3ubuntu0.1"},{"binary_name":"connman-vpn","binary_version":"1.36-2.3ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-32743.json"}},{"package":{"name":"connman","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/connman?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.41-3","1.42-1","1.42-3","1.42-5","1.42-5build2","1.42-5build3"],"ecosystem_specific":{"binaries":[{"binary_name":"connman","binary_version":"1.42-5build3"},{"binary_name":"connman-tests","binary_version":"1.42-5build3"},{"binary_name":"connman-vpn","binary_version":"1.42-5build3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-32743.json"}},{"package":{"name":"connman","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/connman?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.43-1","1.44-1","1.44-2","1.44-3"],"ecosystem_specific":{"binaries":[{"binary_name":"connman","binary_version":"1.44-3"},{"binary_name":"connman-tests","binary_version":"1.44-3"},{"binary_name":"connman-vpn","binary_version":"1.44-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-32743.json"}},{"package":{"name":"connman","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/connman?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.44-3","1.45-2","1.45-3"],"ecosystem_specific":{"binaries":[{"binary_name":"connman","binary_version":"1.45-3"},{"binary_name":"connman-tests","binary_version":"1.45-3"},{"binary_version":"1.45-3","binary_name":"connman-vpn"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-32743.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}