rhsa-2022_1462
Vulnerability from csaf_redhat
Published
2022-04-20 14:58
Modified
2024-11-22 18:41
Summary
Red Hat Security Advisory: Red Hat Single Sign-On 7.5.2 security update on RHEL 7

Notes

Topic
New Red Hat Single Sign-On 7.5.2 packages are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. 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.
Details
Red Hat Single Sign-On 7.5 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. This release of Red Hat Single Sign-On 7.5.2 on RHEL 7 serves as a replacement for Red Hat Single Sign-On 7.5.1, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Security Fix(es): * log4j-core: DoS in log4j 2.x with Thread Context Map (MDC) input data contains a recursive lookup and context lookup pattern (CVE-2021-45105) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
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.


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        "text": "New Red Hat Single Sign-On 7.5.2 packages are now available for Red Hat Enterprise Linux 7.\n\nRed Hat Product Security has rated this update as having a security impact of Low. 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.",
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        "text": "Red Hat Single Sign-On 7.5 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 7.5.2 on RHEL 7 serves as a replacement for Red Hat Single Sign-On 7.5.1, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References.\n\nSecurity Fix(es):\n\n* log4j-core: DoS in log4j 2.x with Thread Context Map (MDC) input data contains a recursive lookup and context lookup pattern (CVE-2021-45105)\n\nFor more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.",
        "title": "Details"
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        "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"
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    "title": "Red Hat Security Advisory: Red Hat Single Sign-On 7.5.2 security update on RHEL 7",
    "tracking": {
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  "vulnerabilities": [
    {
      "cve": "CVE-2021-45105",
      "cwe": {
        "id": "CWE-674",
        "name": "Uncontrolled Recursion"
      },
      "discovery_date": "2021-12-19T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2034067"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Apache Log4j logging library 2.x. when the logging configuration uses a non-default Pattern Layout with a Context Lookup. Attackers with control over Thread Context Map (MDC) input data can craft malicious input data that contains a recursive lookup and can cause Denial of Service.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "log4j-core: DoS in log4j 2.x with Thread Context Map (MDC) input data contains a recursive lookup and context lookup pattern",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat Product Security has performed an analysis of this flaw and has classified the Attack Complexity(AC) as High because there are multiple factors involved which are beyond attacker\u0027s control:\n\n- The application has to use the logging configuration using a Context Map Lookup (for example, $${ctx:loginId}) which is a non-default Pattern Layout.\n- The application developer has to use the map org.apache.logging.log4j.ThreadContext in the application code and save at-least one key (for example, ThreadContext.put(\"loginId\", \"myId\");) in the ThreadContext map object.\n- Attackers must also know this saved key name in order to exploit this flaw.\n\nNote that saving keys in this map is a non-essential usage of log4j and just an optional feature provided. Refer to https://logging.apache.org/log4j/2.x/manual/lookups.html#ContextMapLookup to know more about the Context Map Lookup feature of Log4j.\n\nLog4j 1.x is not impacted by this vulnerability. Note that only the log4j-core JAR file is impacted by this vulnerability. Applications using ONLY the log4j-api JAR file without the log4j-core JAR file are NOT impacted by this vulnerability.\n\n\nDespite including a vulnerable version of Log4j 2.x, this vulnerability is not exploitable in Elasticsearch[0], as shipped in OpenShift Container Platform and OpenShift Logging. OpenShift 3.11 specifically does not contain any context lookups:\n\nhttps://github.com/openshift/openshift-ansible/blob/release-3.11/roles/openshift_logging_elasticsearch/templates/log4j2.properties.j2\n\nThis vulnerability is therefore rated Low for Elasticsearch in OpenShift Container Platform and OpenShift Logging.\n\n[0] https://discuss.elastic.co/t/apache-log4j2-remote-code-execution-rce-vulnerability-cve-2021-44228-esa-2021-31/291476#update-december-18-4",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "7Server-RHSSO-7.5:rh-sso7-keycloak-0:15.0.6-1.redhat_00001.1.el7sso.noarch",
          "7Server-RHSSO-7.5:rh-sso7-keycloak-0:15.0.6-1.redhat_00001.1.el7sso.src",
          "7Server-RHSSO-7.5:rh-sso7-keycloak-server-0:15.0.6-1.redhat_00001.1.el7sso.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-45105"
        },
        {
          "category": "external",
          "summary": "RHBZ#2034067",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2034067"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-45105",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-45105"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-45105",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45105"
        },
        {
          "category": "external",
          "summary": "https://issues.apache.org/jira/browse/LOG4J2-3230",
          "url": "https://issues.apache.org/jira/browse/LOG4J2-3230"
        },
        {
          "category": "external",
          "summary": "https://logging.apache.org/log4j/2.x/security.html",
          "url": "https://logging.apache.org/log4j/2.x/security.html"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2021/12/19/1",
          "url": "https://www.openwall.com/lists/oss-security/2021/12/19/1"
        }
      ],
      "release_date": "2021-12-18T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2022-04-20T14:58:27+00:00",
          "details": "Before applying this update, make sure all previously released errata relevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "7Server-RHSSO-7.5:rh-sso7-keycloak-0:15.0.6-1.redhat_00001.1.el7sso.noarch",
            "7Server-RHSSO-7.5:rh-sso7-keycloak-0:15.0.6-1.redhat_00001.1.el7sso.src",
            "7Server-RHSSO-7.5:rh-sso7-keycloak-server-0:15.0.6-1.redhat_00001.1.el7sso.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2022:1462"
        },
        {
          "category": "workaround",
          "details": "For Log4j 2 versions up to and including 2.16.0, this flaw can be mitigated by:\n- In PatternLayout in the Log4j logging configuration, replace Context Lookups like ${ctx:loginId} or $${ctx:loginId} with Thread Context Map patterns (%X, %mdc, or %MDC) like %X{loginId}.\n- Otherwise, in the Log4j logging configuration, remove references to Context Lookups like ${ctx:loginId} or $${ctx:loginId} where they originate from sources external to the application such as HTTP headers or user input.",
          "product_ids": [
            "7Server-RHSSO-7.5:rh-sso7-keycloak-0:15.0.6-1.redhat_00001.1.el7sso.noarch",
            "7Server-RHSSO-7.5:rh-sso7-keycloak-0:15.0.6-1.redhat_00001.1.el7sso.src",
            "7Server-RHSSO-7.5:rh-sso7-keycloak-server-0:15.0.6-1.redhat_00001.1.el7sso.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "7Server-RHSSO-7.5:rh-sso7-keycloak-0:15.0.6-1.redhat_00001.1.el7sso.noarch",
            "7Server-RHSSO-7.5:rh-sso7-keycloak-0:15.0.6-1.redhat_00001.1.el7sso.src",
            "7Server-RHSSO-7.5:rh-sso7-keycloak-server-0:15.0.6-1.redhat_00001.1.el7sso.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "log4j-core: DoS in log4j 2.x with Thread Context Map (MDC) input data contains a recursive lookup and context lookup pattern"
    }
  ]
}


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