{"id":"USN-4446-1","summary":"squid3 vulnerabilities","details":"Jeriko One discovered that Squid incorrectly handled caching certain\nrequests. A remote attacker could possibly use this issue to perform\ncache-injection attacks or gain access to reverse proxy features such as\nESI. (CVE-2019-12520)\n\nJeriko One and Kristoffer Danielsson discovered that Squid incorrectly\nhandled certain URN requests. A remote attacker could possibly use this\nissue to bypass access checks. (CVE-2019-12523)\n\nJeriko One discovered that Squid incorrectly handled URL decoding. A remote\nattacker could possibly use this issue to bypass certain rule checks.\n(CVE-2019-12524)\n\nJeriko One and Kristoffer Danielsson discovered that Squid incorrectly\nhandled input validation. A remote attacker could use this issue to cause\nSquid to crash, resulting in a denial of service. (CVE-2019-18676)\n","modified":"2026-02-10T04:41:54Z","published":"2020-08-03T13:25:55Z","related":["UBUNTU-CVE-2019-12520","UBUNTU-CVE-2019-12523","UBUNTU-CVE-2019-12524","UBUNTU-CVE-2019-18676"],"upstream":["CVE-2019-12520","CVE-2019-12523","CVE-2019-12524","CVE-2019-18676","UBUNTU-CVE-2019-12520","UBUNTU-CVE-2019-12523","UBUNTU-CVE-2019-12524","UBUNTU-CVE-2019-18676"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4446-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-12520"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-12523"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-12524"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-18676"}],"affected":[{"package":{"name":"squid3","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/squid3@3.5.12-1ubuntu7.12?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.12-1ubuntu7.12"}]}],"versions":["3.3.8-1ubuntu16","3.3.8-1ubuntu17","3.5.12-1ubuntu6","3.5.12-1ubuntu7","3.5.12-1ubuntu7.1","3.5.12-1ubuntu7.2","3.5.12-1ubuntu7.3","3.5.12-1ubuntu7.4","3.5.12-1ubuntu7.5","3.5.12-1ubuntu7.6","3.5.12-1ubuntu7.7","3.5.12-1ubuntu7.8","3.5.12-1ubuntu7.9","3.5.12-1ubuntu7.10","3.5.12-1ubuntu7.11"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"3.5.12-1ubuntu7.12","binary_name":"squid"},{"binary_version":"3.5.12-1ubuntu7.12","binary_name":"squid-cgi"},{"binary_version":"3.5.12-1ubuntu7.12","binary_name":"squid-common"},{"binary_version":"3.5.12-1ubuntu7.12","binary_name":"squid-purge"},{"binary_version":"3.5.12-1ubuntu7.12","binary_name":"squid3"},{"binary_version":"3.5.12-1ubuntu7.12","binary_name":"squidclient"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2019-12523","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2019-18676","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4446-1.json"}},{"package":{"name":"squid3","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/squid3@3.5.27-1ubuntu1.7?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.27-1ubuntu1.7"}]}],"versions":["3.5.23-5ubuntu1","3.5.23-5ubuntu2","3.5.27-1ubuntu1","3.5.27-1ubuntu1.1","3.5.27-1ubuntu1.2","3.5.27-1ubuntu1.3","3.5.27-1ubuntu1.4","3.5.27-1ubuntu1.5","3.5.27-1ubuntu1.6"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"3.5.27-1ubuntu1.7","binary_name":"squid"},{"binary_version":"3.5.27-1ubuntu1.7","binary_name":"squid-cgi"},{"binary_version":"3.5.27-1ubuntu1.7","binary_name":"squid-common"},{"binary_version":"3.5.27-1ubuntu1.7","binary_name":"squid-purge"},{"binary_version":"3.5.27-1ubuntu1.7","binary_name":"squid3"},{"binary_version":"3.5.27-1ubuntu1.7","binary_name":"squidclient"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2019-12520","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2019-12523","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2019-12524","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2019-18676","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4446-1.json"}}],"schema_version":"1.7.3"}