{"id":"UBUNTU-CVE-2023-49606","details":"A use-after-free vulnerability exists in the HTTP Connection Headers parsing in Tinyproxy 1.11.1 and Tinyproxy 1.10.0. A specially crafted HTTP header can trigger reuse of previously freed memory, which leads to memory corruption and could lead to remote code execution. An attacker needs to make an unauthenticated HTTP request to trigger this vulnerability.","modified":"2026-05-20T16:13:55.471385720Z","published":"2024-05-01T16:15:00Z","related":["USN-7190-1"],"upstream":["CVE-2023-49606"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-49606"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-49606"},{"type":"REPORT","url":"https://talosintelligence.com/vulnerability_reports/TALOS-2023-1889"},{"type":"REPORT","url":"https://github.com/tinyproxy/tinyproxy/issues/533"},{"type":"REPORT","url":"https://github.com/tinyproxy/tinyproxy/commit/12a8484265f7b00591293da492bb3c9987001956"},{"type":"REPORT","url":"https://github.com/tinyproxy/tinyproxy/commit/12a8484265f7b00591293da492bb3c9987001956"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7190-1"}],"affected":[{"package":{"name":"tinyproxy","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/tinyproxy?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.3-3ubuntu14.04.1~esm3"}]}],"versions":["1.8.3-3ubuntu1","1.8.3-3ubuntu14.04.1~esm1","1.8.3-3ubuntu14.04.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"tinyproxy","binary_version":"1.8.3-3ubuntu14.04.1~esm3"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49606.json"}},{"package":{"name":"tinyproxy","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/tinyproxy?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.3-3ubuntu16.04.1~esm3"}]}],"versions":["1.8.3-3ubuntu1","1.8.3-3ubuntu16.04.1~esm1","1.8.3-3ubuntu16.04.1~esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"tinyproxy","binary_version":"1.8.3-3ubuntu16.04.1~esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49606.json"}},{"package":{"name":"tinyproxy","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/tinyproxy?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.4-5ubuntu0.1~esm3"}]}],"versions":["1.8.4-2","1.8.4-3","1.8.4-5","1.8.4-5ubuntu0.1~esm1","1.8.4-5ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.8.4-5ubuntu0.1~esm3","binary_name":"tinyproxy"},{"binary_name":"tinyproxy-bin","binary_version":"1.8.4-5ubuntu0.1~esm3"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49606.json"}},{"package":{"name":"tinyproxy","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/tinyproxy?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.10.0-4ubuntu0.2"}]}],"versions":["1.10.0-2","1.10.0-4","1.10.0-4ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"tinyproxy","binary_version":"1.10.0-4ubuntu0.2"},{"binary_version":"1.10.0-4ubuntu0.2","binary_name":"tinyproxy-bin"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49606.json"}},{"package":{"name":"tinyproxy","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/tinyproxy?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.0-1ubuntu0.1~esm2"}]}],"versions":["1.10.0-5","1.11.0-1","1.11.0-1ubuntu0.1~esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"tinyproxy","binary_version":"1.11.0-1ubuntu0.1~esm2"},{"binary_name":"tinyproxy-bin","binary_version":"1.11.0-1ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49606.json"}},{"package":{"name":"tinyproxy","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/tinyproxy?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.1-3ubuntu0.1"}]}],"versions":["1.11.1-2.1","1.11.1-3"],"ecosystem_specific":{"binaries":[{"binary_name":"tinyproxy","binary_version":"1.11.1-3ubuntu0.1"},{"binary_name":"tinyproxy-bin","binary_version":"1.11.1-3ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49606.json"}},{"package":{"name":"tinyproxy","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/tinyproxy?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.2-1"}]}],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"tinyproxy","binary_version":"1.11.2-1"},{"binary_version":"1.11.2-1","binary_name":"tinyproxy-bin"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49606.json"}},{"package":{"name":"tinyproxy","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/tinyproxy?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.2-1"}]}],"ecosystem_specific":{"binaries":[{"binary_name":"tinyproxy","binary_version":"1.11.2-1"},{"binary_name":"tinyproxy-bin","binary_version":"1.11.2-1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49606.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}