{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Moderate" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright © Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "Red Hat Single Sign-On 7.1 is now available for Red Hat Enterprise Linux 6.\n\nRed Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.", "title": "Topic" }, { "category": "general", "text": "Red Hat Single Sign-On is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications.\n\nThis release of Red Hat Single Sign-On 7.1 serves as a replacement for Red Hat Single Sign-On 7.0, and includes several bug fixes and enhancements. For further information regarding those, refer to the Release Notes linked to in the References section.\n\nSecurity Fix(es):\n\n* It was found that keycloak did not correctly check permissions when handling service account user deletion requests sent to the REST server. An attacker with service account authentication could use this flaw to bypass normal permissions and delete users in a separate realm. (CVE-2016-8629)\n\n* It was found that JBoss EAP 7 Header Cache was inefficient. An attacker could use this flaw to cause a denial of service attack. (CVE-2016-9589)\n\n* It was found that keycloak's implementation of HMAC verification for JWS tokens uses a method that runs in non-constant time, potentially leaving the application vulnerable to timing attacks. (CVE-2017-2585)\n\nRed Hat would like to thank Gabriel Lavoie (Halogen Software) for reporting CVE-2016-9589 and Richard Kettelerij (Mindloops) for reporting CVE-2017-2585.", "title": "Details" }, { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2017:0872", "url": "https://access.redhat.com/errata/RHSA-2017:0872" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#moderate", "url": "https://access.redhat.com/security/updates/classification/#moderate" }, { "category": "external", "summary": "https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.1/html/release_notes/", "url": "https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.1/html/release_notes/" }, { "category": "external", "summary": "1388988", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1388988" }, { "category": "external", "summary": "1404782", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1404782" }, { "category": "external", "summary": "1412376", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1412376" }, { "category": "external", "summary": "RHSSO-427", "url": "https://issues.redhat.com/browse/RHSSO-427" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2017/rhsa-2017_0872.json" } ], "title": "Red Hat Security Advisory: Red Hat Single Sign-On 7.1 update on RHEL 6", "tracking": { "current_release_date": "2026-03-18T01:43:43+00:00", "generator": { "date": "2026-03-18T01:43:43+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.7.3" } }, "id": "RHSA-2017:0872", "initial_release_date": "2017-04-04T17:26:43+00:00", "revision_history": [ { "date": "2017-04-04T17:26:43+00:00", "number": "1", "summary": "Initial version" }, { "date": "2017-04-04T17:26:43+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2026-03-18T01:43:43+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Red Hat Single Sign-On 7.1 for RHEL 6 Server", "product": { "name": "Red Hat Single Sign-On 7.1 for RHEL 6 Server", "product_id": "6Server-RHSSO-7.1", "product_identification_helper": { "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7::el6" } } } ], "category": "product_family", "name": "Red Hat Single Sign-On" }, { "branches": [ { "category": "product_version", "name": "rh-sso7-zxing-core-0:3.2.1-1.redhat_4.1.jbcs.el6.noarch", "product": { "name": "rh-sso7-zxing-core-0:3.2.1-1.redhat_4.1.jbcs.el6.noarch", "product_id": 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"1388988" } ], "notes": [ { "category": "description", "text": "It was found that keycloak did not correctly check permissions when handling service account user deletion requests sent to the rest server. An attacker with service account authentication could use this flaw to bypass normal permissions and delete users in a separate realm.", "title": "Vulnerability description" }, { "category": "summary", "text": "keycloak: user deletion via incorrect permissions check", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "6Server-RHSSO-7.1:rh-sso7-0:1-2.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-0:1-2.jbcs.el6.x86_64", "6Server-RHSSO-7.1:rh-sso7-freemarker-0:2.3.23-1.redhat_2.2.jbcs.el6.noarch", "6Server-RHSSO-7.1:rh-sso7-freemarker-0:2.3.23-1.redhat_2.2.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-javapackages-tools-0:3.4.1-5.15.3.jbcs.el6.noarch", 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"category": "impact", "details": "Moderate" } ], "title": "keycloak: user deletion via incorrect permissions check" }, { "acknowledgments": [ { "names": [ "Gabriel Lavoie" ], "organization": "Halogen Software" } ], "cve": "CVE-2016-9589", "cwe": { "id": "CWE-400", "name": "Uncontrolled Resource Consumption" }, "discovery_date": "2016-12-14T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1404782" } ], "notes": [ { "category": "description", "text": "It was found that JBoss EAP 7 Header Cache was inefficient. An attacker could use this flaw to cause a denial of service attack.", "title": "Vulnerability description" }, { "category": "summary", "text": "wildfly: ParseState headerValuesCache can be exploited to fill heap with garbage", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "6Server-RHSSO-7.1:rh-sso7-0:1-2.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-0:1-2.jbcs.el6.x86_64", "6Server-RHSSO-7.1:rh-sso7-freemarker-0:2.3.23-1.redhat_2.2.jbcs.el6.noarch", "6Server-RHSSO-7.1:rh-sso7-freemarker-0:2.3.23-1.redhat_2.2.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-javapackages-tools-0:3.4.1-5.15.3.jbcs.el6.noarch", "6Server-RHSSO-7.1:rh-sso7-javapackages-tools-0:3.4.1-5.15.3.jbcs.el6.src", 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headerValuesCache can be exploited to fill heap with garbage" }, { "acknowledgments": [ { "names": [ "Richard Kettelerij" ], "organization": "Mindloops" } ], "cve": "CVE-2017-2585", "cwe": { "id": "CWE-385", "name": "Covert Timing Channel" }, "discovery_date": "2017-01-11T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1412376" } ], "notes": [ { "category": "description", "text": "It was found that keycloak's implementation of HMAC verification for JWS tokens uses a method that runs in non-constant time, potentially leaving the application vulnerable to timing attacks.", "title": "Vulnerability description" }, { "category": "summary", "text": "keycloak: timing attack in JWS signature verification", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "6Server-RHSSO-7.1:rh-sso7-0:1-2.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-0:1-2.jbcs.el6.x86_64", "6Server-RHSSO-7.1:rh-sso7-freemarker-0:2.3.23-1.redhat_2.2.jbcs.el6.noarch", "6Server-RHSSO-7.1:rh-sso7-freemarker-0:2.3.23-1.redhat_2.2.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-javapackages-tools-0:3.4.1-5.15.3.jbcs.el6.noarch", "6Server-RHSSO-7.1:rh-sso7-javapackages-tools-0:3.4.1-5.15.3.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-keycloak-0:2.5.5-2.Final_redhat_1.1.jbcs.el6.noarch", "6Server-RHSSO-7.1:rh-sso7-keycloak-0:2.5.5-2.Final_redhat_1.1.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-keycloak-server-0:2.5.5-2.Final_redhat_1.1.jbcs.el6.noarch", "6Server-RHSSO-7.1:rh-sso7-libunix-dbus-java-0:0.8.0-2.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-libunix-dbus-java-0:0.8.0-2.jbcs.el6.x86_64", "6Server-RHSSO-7.1:rh-sso7-libunix-dbus-java-debuginfo-0:0.8.0-2.jbcs.el6.x86_64", 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"category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2017-2585" }, { "category": "external", "summary": "RHBZ#1412376", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1412376" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2017-2585", "url": "https://www.cve.org/CVERecord?id=CVE-2017-2585" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-2585", "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-2585" } ], "release_date": "2017-04-04T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2017-04-04T17:26:43+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258", "product_ids": [ "6Server-RHSSO-7.1:rh-sso7-0:1-2.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-0:1-2.jbcs.el6.x86_64", 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"NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N", "version": "2.0" }, "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.0" }, "products": [ "6Server-RHSSO-7.1:rh-sso7-0:1-2.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-0:1-2.jbcs.el6.x86_64", "6Server-RHSSO-7.1:rh-sso7-freemarker-0:2.3.23-1.redhat_2.2.jbcs.el6.noarch", "6Server-RHSSO-7.1:rh-sso7-freemarker-0:2.3.23-1.redhat_2.2.jbcs.el6.src", "6Server-RHSSO-7.1:rh-sso7-javapackages-tools-0:3.4.1-5.15.3.jbcs.el6.noarch", "6Server-RHSSO-7.1:rh-sso7-javapackages-tools-0:3.4.1-5.15.3.jbcs.el6.src", 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