rhsa-2023_3068
Vulnerability from csaf_redhat
Published
2023-05-16 08:49
Modified
2024-11-06 02:59
Summary
Red Hat Security Advisory: mingw-expat security update

Notes

Topic
An update for mingw-expat is now available for Red Hat Enterprise Linux 8. 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. The mingw-expat packages provide a port of the Expat library for MinGW. Security Fix(es): * expat: a use-after-free in the doContent function in xmlparse.c (CVE-2022-40674) 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. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.8 Release Notes linked from 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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        "name": "Use After Free"
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      "discovery_date": "2022-09-29T00:00:00+00:00",
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          "text": "A vulnerability was found in expat. With this flaw, it is possible to create a situation in which parsing is suspended while substituting in an internal entity so that XML_ResumeParser directly uses the internalEntityProcessor as its processor. If the subsequent parse includes some unclosed tags, this will return without calling storeRawNames to ensure that the raw versions of the tag names are stored in memory other than the parse buffer itself. Issues occur if the parse buffer is changed or reallocated (for example, if processing a file line by line), problems occur. Using this vulnerability in the doContent function allows an attacker to triage a denial of service or potentially arbitrary code execution.",
          "title": "Vulnerability description"
        },
        {
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          "text": "expat: a use-after-free in the doContent function in xmlparse.c",
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          "title": "Statement"
        },
        {
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          "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.",
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          "summary": "https://blog.hartwork.org/posts/expat-2-4-9-released/",
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      "release_date": "2022-09-14T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-05-16T08:49:53+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",
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            "CRB-8.8.0.GA:mingw64-expat-0:2.4.8-2.el8.noarch",
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          "restart_required": {
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          "url": "https://access.redhat.com/errata/RHSA-2023:3068"
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        {
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          "details": "There is no known mitigation other than restricting applications using the expat library from processing XML content. Please update the affected packages as soon as possible.",
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
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            "CRB-8.8.0.GA:mingw64-expat-debuginfo-0:2.4.8-2.el8.noarch"
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "expat: a use-after-free in the doContent function in xmlparse.c"
    }
  ]
}


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