CVE-2021-3518 (GCVE-0-2021-3518)

Vulnerability from cvelistv5 – Published: 2021-05-18 11:20 – Updated: 2024-08-03 17:01
VLAI
Summary
There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a libxml2 Affected: libxml2 2.9.11
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T10:57:01+00:00",
      "cve": "CVE-2021-3518",
      "id": "CVE-2021-3518",
      "initial_release_date": "2021-04-22T00:00:00+00:00",
      "product_status:fixed": "193",
      "product_status:known_affected": "12",
      "product_status:known_not_affected": "4",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "libxml2: Use-after-free in xmlXIncludeDoProcess() in xinclude.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-3518.json",
      "version": "3"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.