{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2019-12520","title":"Title"},{"category":"description","text":"An issue was discovered in Squid through 4.7 and 5. When receiving a request, Squid checks its cache to see if it can serve up a response. It does this by making a MD5 hash of the absolute URL of the request. If found, it servers the request. The absolute URL can include the decoded UserInfo (username and password) for certain protocols. This decoded info is prepended to the domain. This allows an attacker to provide a username that has special characters to delimit the domain, and treat the rest of the URL as a path or query string. An attacker could first make a request to their domain using an encoded username, then when a request for the target domain comes in that decodes to the exact URL, it will serve the attacker's HTML instead of the real HTML. On Squid servers that also act as reverse proxies, this allows an attacker to gain access to features that only reverse proxies can use, such as ESI.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2019-12520","url":"https://www.suse.com/security/cve/CVE-2019-12520"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1169666 for CVE-2019-12520","url":"https://bugzilla.suse.com/1169666"},{"category":"external","summary":"SUSE Bug 1170423 for CVE-2019-12520","url":"https://bugzilla.suse.com/1170423"},{"category":"external","summary":"Advisory link for SUSE-SU-2020:1227-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2020-May/006808.html"},{"category":"external","summary":"Advisory link for SUSE-SU-2020:14460-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2020-August/007289.html"}],"title":"SUSE CVE CVE-2019-12520","tracking":{"current_release_date":"2025-10-07T09:30:36Z","generator":{"date":"2023-02-15T04:11:32Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2019-12520","initial_release_date":"2023-02-15T04:11:32Z","revision_history":[{"date":"2023-02-15T04:11:32Z","number":"2","summary":"Current version"},{"date":"2025-01-01T06:29:24Z","number":"3","summary":"Current version"},{"date":"2025-02-15T07:10:06Z","number":"4","summary":"Current version"},{"date":"2025-02-17T07:35:14Z","number":"5","summary":"Current version"},{"date":"2025-03-15T10:44:48Z","number":"6","summary":"Current version"},{"date":"2025-04-25T06:12:49Z","number":"7","summary":"Current version"},{"date":"2025-10-07T09:30:36Z","number":"8","summary":"Current version"}],"status":"interim","version":"8"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"HPE Helion OpenStack 8","product":{"name":"HPE Helion OpenStack 8","product_id":"HPE Helion OpenStack 8","product_identification_helper":{"cpe":"cpe:/o:suse:hpe-helion-openstack:8"}}},{"category":"product_name","name":"SUSE Enterprise Storage 5","product":{"name":"SUSE Enterprise Storage 5","product_id":"SUSE Enterprise Storage 5","product_identification_helper":{"cpe":"cpe:/o:suse:ses:5"}}},{"category":"product_name","name":"SUSE Enterprise Storage 6","product":{"name":"SUSE Enterprise Storage 6","product_id":"SUSE Enterprise Storage 6","product_identification_helper":{"cpe":"cpe:/o:suse:ses:6"}}},{"category":"product_name","name":"SUSE 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SP1-LTSS"},{"category":"default_component_of","full_product_name":{"name":"squid as component of SUSE Linux Enterprise Server 12 SP5","product_id":"SUSE Linux Enterprise Server 12 SP5:squid"},"product_reference":"squid","relates_to_product_reference":"SUSE Linux Enterprise Server 12 SP5"},{"category":"default_component_of","full_product_name":{"name":"squid as component of SUSE Linux Enterprise Server 15-ESPOS","product_id":"SUSE Linux Enterprise Server 15-ESPOS:squid"},"product_reference":"squid","relates_to_product_reference":"SUSE Linux Enterprise Server 15-ESPOS"},{"category":"default_component_of","full_product_name":{"name":"squid as component of SUSE Linux Enterprise Server 15-LTSS","product_id":"SUSE Linux Enterprise Server 15-LTSS:squid"},"product_reference":"squid","relates_to_product_reference":"SUSE Linux Enterprise Server 15-LTSS"},{"category":"default_component_of","full_product_name":{"name":"squid as component of SUSE Linux Enterprise Server for SAP Applications 12 SP5","product_id":"SUSE Linux Enterprise Server for SAP Applications 12 SP5:squid"},"product_reference":"squid","relates_to_product_reference":"SUSE Linux Enterprise Server for SAP Applications 12 SP5"}]},"vulnerabilities":[{"cve":"CVE-2019-12520","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2019-12520"}],"notes":[{"category":"general","text":"An issue was discovered in Squid through 4.7 and 5. When receiving a request, Squid checks its cache to see if it can serve up a response. It does this by making a MD5 hash of the absolute URL of the request. If found, it servers the request. The absolute URL can include the decoded UserInfo (username and password) for certain protocols. This decoded info is prepended to the domain. This allows an attacker to provide a username that has special characters to delimit the domain, and treat the rest of the URL as a path or query string. An attacker could first make a request to their domain using an encoded username, then when a request for the target domain comes in that decodes to the exact URL, it will serve the attacker's HTML instead of the real HTML. On Squid servers that also act as reverse proxies, this allows an attacker to gain access to features that only reverse proxies can use, such as ESI.","title":"CVE description"}],"product_status":{"known_not_affected":["SUSE Enterprise Storage 6:squid","SUSE Linux Enterprise High Performance Computing 12 SP5:squid","SUSE Linux Enterprise High Performance Computing 15 SP1:squid","SUSE Linux Enterprise High Performance Computing 15-LTSS:squid","SUSE Linux Enterprise Module for Server Applications 15 SP1:squid","SUSE Linux Enterprise Server 11 SP1 for Teradata:squid","SUSE Linux Enterprise Server 11 SP3 for Teradata:squid","SUSE Linux Enterprise Server 11 SP4 LTSS:squid","SUSE Linux Enterprise Server 12 SP1-LTSS:squid","SUSE Linux Enterprise Server 12 SP5:squid","SUSE Linux Enterprise Server 15 SP1:squid","SUSE Linux Enterprise Server 15-ESPOS:squid","SUSE Linux Enterprise Server 15-LTSS:squid","SUSE Linux Enterprise Server for SAP Applications 12 SP5:squid","SUSE Linux Enterprise Server 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Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1169666 for CVE-2019-12520","url":"https://bugzilla.suse.com/1169666"},{"category":"external","summary":"SUSE Bug 1170423 for CVE-2019-12520","url":"https://bugzilla.suse.com/1170423"},{"category":"external","summary":"Advisory link for SUSE-SU-2020:1227-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2020-May/006808.html"},{"category":"external","summary":"Advisory link for SUSE-SU-2020:14460-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2020-August/007289.html"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["HPE Helion OpenStack 8:squid-3.5.21-26.23.1","SUSE Enterprise Storage 5:squid-3.5.21-26.23.1","SUSE Liberty Linux 8:libecap-1.0.1-2.module+el8.1.0+4044+36416a77","SUSE Liberty Linux 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