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CVE-2021-3472 (GCVE-0-2021-3472)

Vulnerability from cvelistv5 – Published: 2021-04-26 14:29 – Updated: 2024-08-03 16:53
VLAI
Summary
A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a xorg-x11-server Affected: xorg-x11-server 1.20.11
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      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"secalert@redhat.com\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-191\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-3472\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2021-04-26T15:15:07.857\",\"lastModified\":\"2024-11-21T06:21:37.447\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.\"},{\"lang\":\"es\",\"value\":\"Se encontr\u00f3 un fallo en xorg-x11-server en versiones anteriores a 1.20.11.\u0026#xa0;Se puede producir un subdesbordamiento de enteros en xserver que puede conllevar a una escalada de privilegios local.\u0026#xa0;La mayor amenaza de esta vulnerabilidad es la confidencialidad e integridad de los datos, as\u00ed como la disponibilidad del 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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T15:57:33+00:00",
      "cve": "CVE-2021-3472",
      "id": "CVE-2021-3472",
      "initial_release_date": "2021-04-13T14:00:00+00:00",
      "product_status:fixed": "280",
      "product_status:known_affected": "19",
      "product_status:known_not_affected": "9",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "xorg-x11-server: XChangeFeedbackControl integer underflow leads to privilege escalation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-3472.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-01T01:41:24Z",
      "cve": "CVE-2021-3472",
      "id": "CVE-2021-3472",
      "initial_release_date": "2023-02-15T03:49:26Z",
      "product_status:known_affected": "396",
      "product_status:recommended": "295",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-3472",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-3472.json",
      "version": "39"
    }
  }
}



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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.