{"id":"USN-4446-2","summary":"squid3 regression","details":"USN-4446-1 fixed vulnerabilities in Squid. The update introduced a\nregression when using Squid with the icap or ecap protocols. This update\nfixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Jeriko One discovered that Squid incorrectly handled caching certain\n requests. A remote attacker could possibly use this issue to perform\n cache-injection attacks or gain access to reverse proxy features such as\n ESI. (CVE-2019-12520)\n \n Jeriko One and Kristoffer Danielsson discovered that Squid incorrectly\n handled certain URN requests. A remote attacker could possibly use this\n issue to bypass access checks. (CVE-2019-12523)\n \n Jeriko One discovered that Squid incorrectly handled URL decoding. A remote\n attacker could possibly use this issue to bypass certain rule checks.\n (CVE-2019-12524)\n \n Jeriko One and Kristoffer Danielsson discovered that Squid incorrectly\n handled input validation. A remote attacker could use this issue to cause\n Squid to crash, resulting in a denial of service. (CVE-2019-18676)\n","modified":"2026-02-10T04:41:54Z","published":"2020-08-27T10:46:21Z","references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4446-2"},{"type":"REPORT","url":"https://launchpad.net/bugs/1890265"}],"affected":[{"package":{"name":"squid3","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/squid3@3.5.12-1ubuntu7.13?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.12-1ubuntu7.13"}]}],"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","3.5.12-1ubuntu7.12"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"squid","binary_version":"3.5.12-1ubuntu7.13"},{"binary_name":"squid-cgi","binary_version":"3.5.12-1ubuntu7.13"},{"binary_name":"squid-common","binary_version":"3.5.12-1ubuntu7.13"},{"binary_name":"squid-purge","binary_version":"3.5.12-1ubuntu7.13"},{"binary_name":"squid3","binary_version":"3.5.12-1ubuntu7.13"},{"binary_name":"squidclient","binary_version":"3.5.12-1ubuntu7.13"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4446-2.json","cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[]}}},{"package":{"name":"squid3","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/squid3@3.5.27-1ubuntu1.8?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.27-1ubuntu1.8"}]}],"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","3.5.27-1ubuntu1.7"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"squid","binary_version":"3.5.27-1ubuntu1.8"},{"binary_name":"squid-cgi","binary_version":"3.5.27-1ubuntu1.8"},{"binary_name":"squid-common","binary_version":"3.5.27-1ubuntu1.8"},{"binary_name":"squid-purge","binary_version":"3.5.27-1ubuntu1.8"},{"binary_name":"squid3","binary_version":"3.5.27-1ubuntu1.8"},{"binary_name":"squidclient","binary_version":"3.5.27-1ubuntu1.8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4446-2.json","cves_map":{"ecosystem":"Ubuntu:18.04:LTS","cves":[]}}}],"schema_version":"1.7.3"}