alsa-2021:2569
Vulnerability from osv_almalinux
Published
2021-06-29 13:42
Modified
2021-11-12 10:20
Summary
Moderate: libxml2 security update
Details

The libxml2 library is a development toolbox providing the implementation of various XML standards.

Security Fix(es):

  • libxml2: Use-after-free in xmlEncodeEntitiesInternal() in entities.c (CVE-2021-3516)

  • libxml2: Heap-based buffer overflow in xmlEncodeEntitiesInternal() in entities.c (CVE-2021-3517)

  • libxml2: Use-after-free in xmlXIncludeDoProcess() in xinclude.c (CVE-2021-3518)

  • libxml2: NULL pointer dereference when post-validating mixed content parsed in recovery mode (CVE-2021-3537)

  • libxml2: Exponential entity expansion attack bypasses all existing protection mechanisms (CVE-2021-3541)

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.

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "libxml2-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.9.7-9.el8_4.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The libxml2 library is a development toolbox providing the implementation of various XML standards.\n\nSecurity Fix(es):\n\n* libxml2: Use-after-free in xmlEncodeEntitiesInternal() in entities.c (CVE-2021-3516)\n\n* libxml2: Heap-based buffer overflow in xmlEncodeEntitiesInternal() in entities.c (CVE-2021-3517)\n\n* libxml2: Use-after-free in xmlXIncludeDoProcess() in xinclude.c (CVE-2021-3518)\n\n* libxml2: NULL pointer dereference when post-validating mixed content parsed in recovery mode (CVE-2021-3537)\n\n* libxml2: Exponential entity expansion attack bypasses all existing protection mechanisms (CVE-2021-3541)\n\nFor 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.",
  "id": "ALSA-2021:2569",
  "modified": "2021-11-12T10:20:56Z",
  "published": "2021-06-29T13:42:19Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://vulners.com/cve/CVE-2021-3516"
    },
    {
      "type": "REPORT",
      "url": "https://vulners.com/cve/CVE-2021-3517"
    },
    {
      "type": "REPORT",
      "url": "https://vulners.com/cve/CVE-2021-3518"
    },
    {
      "type": "REPORT",
      "url": "https://vulners.com/cve/CVE-2021-3537"
    },
    {
      "type": "REPORT",
      "url": "https://vulners.com/cve/CVE-2021-3541"
    }
  ],
  "related": [
    "CVE-2021-3516",
    "CVE-2021-3517",
    "CVE-2021-3518",
    "CVE-2021-3537",
    "CVE-2021-3541"
  ],
  "summary": "Moderate: libxml2 security update"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.