rhsa-2022_1068
Vulnerability from csaf_redhat
Published
2022-03-28 09:00
Modified
2024-11-15 14:44
Summary
Red Hat Security Advisory: expat security update

Notes

Topic
An update for expat is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. 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
Expat is a C library for parsing XML documents. Security Fix(es): * expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235) * expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution (CVE-2022-25236) * expat: Integer overflow in storeRawNames() (CVE-2022-25315) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, 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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  "vulnerabilities": [
    {
      "cve": "CVE-2022-25235",
      "cwe": {
        "id": "CWE-838",
        "name": "Inappropriate Encoding for Output Context"
      },
      "discovery_date": "2022-02-21T00:00:00+00:00",
      "ids": [
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          "text": "2056366"
        }
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      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in expat. Passing malformed 2- and 3-byte UTF-8 sequences (for example, from start tag names) to the XML processing application on top of expat can lead to arbitrary code execution. This issue is dependent on how invalid UTF-8 is handled inside the XML processor.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This flaw affects applications that leverage expat to parse untrusted XML files. Applications that only parse trusted XML files or do not process XML files at all are not affected by this flaw.",
          "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"
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        {
          "category": "external",
          "summary": "https://blog.hartwork.org/posts/expat-2-4-5-released/",
          "url": "https://blog.hartwork.org/posts/expat-2-4-5-released/"
        }
      ],
      "release_date": "2022-02-19T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2022-03-28T09:00:37+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\n\nAfter installing the updated packages, applications using the Expat library must be restarted for the update to take effect.",
          "product_ids": [
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            "BaseOS-8.1.0.Z.E4S:expat-0:2.2.5-3.el8_1.1.ppc64le",
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            "BaseOS-8.1.0.Z.E4S:expat-debuginfo-0:2.2.5-3.el8_1.1.ppc64le",
            "BaseOS-8.1.0.Z.E4S:expat-debuginfo-0:2.2.5-3.el8_1.1.x86_64",
            "BaseOS-8.1.0.Z.E4S:expat-debugsource-0:2.2.5-3.el8_1.1.i686",
            "BaseOS-8.1.0.Z.E4S:expat-debugsource-0:2.2.5-3.el8_1.1.ppc64le",
            "BaseOS-8.1.0.Z.E4S:expat-debugsource-0:2.2.5-3.el8_1.1.x86_64",
            "BaseOS-8.1.0.Z.E4S:expat-devel-0:2.2.5-3.el8_1.1.i686",
            "BaseOS-8.1.0.Z.E4S:expat-devel-0:2.2.5-3.el8_1.1.ppc64le",
            "BaseOS-8.1.0.Z.E4S:expat-devel-0:2.2.5-3.el8_1.1.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2022:1068"
        },
        {
          "category": "workaround",
          "details": "There is no known mitigation other than restricting applications using the expat library from processing untrusted XML content. Please update the affected packages as soon as possible.",
          "product_ids": [
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            "BaseOS-8.1.0.Z.E4S:expat-0:2.2.5-3.el8_1.1.ppc64le",
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            "BaseOS-8.1.0.Z.E4S:expat-devel-0:2.2.5-3.el8_1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "BaseOS-8.1.0.Z.E4S:expat-0:2.2.5-3.el8_1.1.i686",
            "BaseOS-8.1.0.Z.E4S:expat-0:2.2.5-3.el8_1.1.ppc64le",
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            "BaseOS-8.1.0.Z.E4S:expat-debuginfo-0:2.2.5-3.el8_1.1.x86_64",
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            "BaseOS-8.1.0.Z.E4S:expat-debugsource-0:2.2.5-3.el8_1.1.x86_64",
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            "BaseOS-8.1.0.Z.E4S:expat-devel-0:2.2.5-3.el8_1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "expat: Integer overflow in storeRawNames()"
    }
  ]
}


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