rhsa-2022_6838
Vulnerability from csaf_redhat
Published
2022-10-06 14:56
Modified
2024-11-15 13:14
Summary
Red Hat Security Advisory: expat security update

Notes

Topic
An update for expat is now available for Red Hat Enterprise Linux 9. 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: 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.
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": "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.",
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          "text": "expat: a use-after-free in the doContent function in xmlparse.c",
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          "text": "This flaw is rated as important because this flaw can easily compromise the confidentiality, integrity, or availability of resources but a successful attack can not execute arbitrary code, or allow remote users to cause a denial of service because attack complexity is high and depends on conditions beyond the attacker\u0027s control.",
          "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.",
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2022-40674"
        },
        {
          "category": "external",
          "summary": "RHBZ#2130769",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2130769"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2022-40674",
          "url": "https://www.cve.org/CVERecord?id=CVE-2022-40674"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-40674",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-40674"
        },
        {
          "category": "external",
          "summary": "https://blog.hartwork.org/posts/expat-2-4-9-released/",
          "url": "https://blog.hartwork.org/posts/expat-2-4-9-released/"
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        {
          "category": "external",
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      "release_date": "2022-09-14T00:00:00+00:00",
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          "date": "2022-10-06T14:56:58+00:00",
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            "baseScore": 8.1,
            "baseSeverity": "HIGH",
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            "integrityImpact": "HIGH",
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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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