Vulnerability-Lookup

CVE-2025-11678 (GCVE-0-2025-11678)

Vulnerability from cvelistv5 – Published: 2025-10-20 13:51 – Updated: 2025-10-20 14:00

Title

Stack-based Buffer Overflow in libwebsockets DNS response parsing

Summary

Stack-based Buffer Overflow in lws_adns_parse_label in warmcat libwebsockets allows, when the LWS_WITH_SYS_ASYNC_DNS flag is enabled during compilation, to overflow the label_stack, when the attacker is able to sniff a DNS request in order to craft a response with a matching id containing a label longer than the maximum.

Severity

7.5 (High)


                        
                          CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-20 14:00 UTC

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

Nozomi mitre root

References

2 references

URL	Tags
https://libwebsockets.org/git/libwebsockets/commi…	patchvendor-advisory
https://www.nozominetworks.com/labs/vulnerability…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
warmcat	libwebsocket	Affected: 4.0 , ≤ 4.4.2 (semver) Affected: 4.0 , ≤ 4.3.6 (semver)	guessed

Credits

Raffaele Bova at Nozomi Networks

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2025-11678

Vulnerability from fkie_nvd - Published: 2025-10-20 14:15 - Updated: 2026-06-17 08:30

Severity

7.5 (High) - CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	prodsec@nozominetworks.com	https://libwebsockets.org/git/libwebsockets/commit?id=2bb9598562b37c942ba5b04bcde3f7fdf66a9d3a
	prodsec@nozominetworks.com	https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-11678

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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GHSA-2G39-F45W-2FCM

Vulnerability from github – Published: 2025-10-20 15:30 – Updated: 2025-10-20 15:30

Details

Severity

7.5 (High)


                  
                    CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-20T14:15:40Z",
    "severity": "HIGH"
  },
  "details": "Stack-based Buffer Overflow\u00a0in lws_adns_parse_label in warmcat libwebsockets allows, when the LWS_WITH_SYS_ASYNC_DNS flag is enabled during compilation, to overflow the label_stack, when the attacker is able to sniff a DNS request in order to craft a response with a matching id containing a label longer than the maximum.",
  "id": "GHSA-2g39-f45w-2fcm",
  "modified": "2025-10-20T15:30:25Z",
  "published": "2025-10-20T15:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11678"
    },
    {
      "type": "WEB",
      "url": "https://libwebsockets.org/git/libwebsockets/commit?id=2bb9598562b37c942ba5b04bcde3f7fdf66a9d3a"
    },
    {
      "type": "WEB",
      "url": "https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-11678"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

RHSA-2025:22969

Vulnerability from csaf_redhat - Published: 2025-12-09 18:20 - Updated: 2026-03-18 03:14

Summary

Red Hat Security Advisory: Red Hat OpenStack Platform 17.1 (libwebsockets) security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2025-11678.

CVE-2025-11678

A stack based buffer overflow flaw has been discovered in libwebsockets. The vulnerability allows an attacker that can inspect DNS requests made by the victim (e.g. being in the same wireless network) to forge a DNS response packet that overflows the stack and may lead to arbitrary code execution.

7.6 (High)


                
                  CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L

Fixed: 5 products

https://access.redhat.com/errata/RHSA-2025:22969

Open the full advisory

ubuntu-cve-2025-11678

Vulnerability from osv_ubuntu

Published

2025-10-20 14:15

Modified

2026-04-22 07:53

Summary

Details

Severity

7.5 (High)


                    
                      CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2025-11678	REPORT
	https://www.cve.org/CVERecord?id=CVE-2025-11678	REPORT
	https://libwebsockets.org/git/libwebsockets/commi…	REPORT
	https://www.nozominetworks.com/labs/vulnerability…	REPORT
	https://ubuntu.com/security/notices/USN-8024-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "4.0.20-2ubuntu1.1"
          },
          {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "4.0.20-2ubuntu1.1"
          },
          {
            "binary_name": "libwebsockets16",
            "binary_version": "4.0.20-2ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libwebsockets",
        "purl": "pkg:deb/ubuntu/libwebsockets@4.0.20-2ubuntu1.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.20-2ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.20-2",
        "4.0.20-2ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libwebsockets-evlib-ev",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets-evlib-glib",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets-evlib-uv",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets19t64",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "libwebsockets",
        "purl": "pkg:deb/ubuntu/libwebsockets@4.3.3-1.1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.3.3-1.1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3.2-4",
        "4.3.3-1",
        "4.3.3-1.1build1",
        "4.3.3-1.1build2",
        "4.3.3-1.1build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwebsockets-evlib-ev",
            "binary_version": "4.3.5-1"
          },
          {
            "binary_name": "libwebsockets-evlib-glib",
            "binary_version": "4.3.5-1"
          },
          {
            "binary_name": "libwebsockets-evlib-uv",
            "binary_version": "4.3.5-1"
          },
          {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "4.3.5-1"
          },
          {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "4.3.5-1"
          },
          {
            "binary_name": "libwebsockets19t64",
            "binary_version": "4.3.5-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libwebsockets",
        "purl": "pkg:deb/ubuntu/libwebsockets@4.3.5-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3.5-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Stack-based Buffer Overflow\u00a0in lws_adns_parse_label in warmcat libwebsockets allows, when the LWS_WITH_SYS_ASYNC_DNS flag is enabled during compilation, to overflow the label_stack, when the attacker is able to sniff a DNS request in order to craft a response with a matching id containing a label longer than the maximum.",
  "id": "UBUNTU-CVE-2025-11678",
  "modified": "2026-04-22T07:53:20Z",
  "published": "2025-10-20T14:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-11678"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-11678"
    },
    {
      "type": "REPORT",
      "url": "https://libwebsockets.org/git/libwebsockets/commit?id=2bb9598562b37c942ba5b04bcde3f7fdf66a9d3a"
    },
    {
      "type": "REPORT",
      "url": "https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-11678"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8024-1"
    }
  ],
  "related": [
    "USN-8024-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-11678"
  ]
}

WID-SEC-W-2025-2784

Vulnerability from csaf_certbund - Published: 2025-12-09 23:00 - Updated: 2026-02-11 23:00

Summary

Red Hat OpenStack Platform (Wallaby): Schwachstelle ermöglicht Codeausführung

Severity

Mittel

Scope

1 vulnerability in this advisory, including CVE-2025-11678.

CVE-2025-11678

Known affected: 2 products

Open the full advisory

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2025-11678 (GCVE-0-2025-11678)

FKIE_CVE-2025-11678

GHSA-2G39-F45W-2FCM

RHSA-2025:22969

ubuntu-cve-2025-11678

Vulnerability from osv_ubuntu

WID-SEC-W-2025-2784

Tags

Sightings

Nomenclature

Related by attack behaviour