CVE-2021-3772 (GCVE-0-2021-3772)

Vulnerability from cvelistv5 – Published: 2022-03-02 00:00 – Updated: 2024-08-03 17:09
VLAI
Summary
A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
CWE
  • CWE-354 - - Improper Validation of Integrity Check Value
Assigner
References
Impacted products
Vendor Product Version
n/a kernel Affected: Fixed in linux kernel v5.15 and above
Show details on NVD website
To clipboard 

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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:14:37+00:00",
      "cve": "CVE-2021-3772",
      "id": "CVE-2021-3772",
      "initial_release_date": "2021-09-08T06:38:00+00:00",
      "product_status:fixed": "150",
      "product_status:known_affected": "43",
      "product_status:known_not_affected": "108",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: sctp: Invalid chunks may be used to remotely remove existing associations",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-3772.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.