rhsa-2024_0411
Vulnerability from csaf_redhat
Published
2024-01-25 08:32
Modified
2024-11-22 16:52
Summary
Red Hat Security Advisory: libfastjson security update

Notes

Topic
An update for libfastjson is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. Red 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.
Details
The libfastjson library provides essential JavaScript Object Notation (JSON) handling functions. The library enables users to construct JSON objects in C, output them as JSON-formatted strings, and convert JSON-formatted strings back to the C representation of JSON objects. Security Fix(es): * json-c, libfastjson: integer overflow and out-of-bounds write via a large JSON file (CVE-2020-12762) 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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        "product_reference": "libfastjson-debugsource-0:0.99.9-1.el8_6.1.s390x",
        "relates_to_product_reference": "AppStream-8.6.0.Z.EUS"
      },
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        "category": "default_component_of",
        "full_product_name": {
          "name": "libfastjson-debugsource-0:0.99.9-1.el8_6.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)",
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  "vulnerabilities": [
    {
      "cve": "CVE-2020-12762",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "discovery_date": "2020-05-09T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1835253"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in json-c. In printbuf_memappend, certain crafted values can overflow the memory allowing an attacker to write past the memory boundary. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libfastjson: integer overflow and out-of-bounds write via a large JSON file",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is essentially a integer overflow in the \u0027size\u0027 variable caused by large data input. In most systems its a signed integer overflow and results in out of bounds buffer write on the heap. However the impact is greatly reduced because such an attack is only possible if the application compiled with json-c is designed to accept untrusted large json files. Also the attack vector in this case as considered as local in most practical cases.",
          "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": {
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-12762"
        },
        {
          "category": "external",
          "summary": "RHBZ#1835253",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1835253"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-12762",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-12762"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-12762",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12762"
        }
      ],
      "release_date": "2020-05-02T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-01-25T08:32:08+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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          "restart_required": {
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          "url": "https://access.redhat.com/errata/RHSA-2024:0411"
        },
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          "category": "workaround",
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libfastjson: integer overflow and out-of-bounds write via a large JSON file"
    }
  ]
}


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