Vulnerability-Lookup

CVE-2026-45747 (GCVE-0-2026-45747)

Vulnerability from cvelistv5 – Published: 2026-09-10 14:17 – Updated: 2026-09-10 16:26

Title

Suricata lua/tls: null dereference in TlsGetCertInfo

Summary

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.

Severity

7.5 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-10 16:26 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/OISF/suricata/security/advisor…	x_refsource_CONFIRM
https://forum.suricata.io/t/suricata-8-0-5-and-7-…	x_refsource_MISC
https://redmine.openinfosecfoundation.org/issues/6286	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
OISF	suricata	Affected: < 7.0.16	guessed

Show details on NVD website

JSON

To clipboard

{
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                "id": "CVE-2026-45747",
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      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
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      "title": "suricata: Suricata: Denial of Service via NULL dereference in Lua TLS certificate helper",
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CERTFR-2026-AVI-0614

Vulnerability from certfr_avis - Published: 2026-05-20 - Updated: 2026-05-20

De multiples vulnérabilités ont été découvertes dans Suricata. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un problème de sécurité non spécifié par l'éditeur.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	Suricata	Suricata	Suricata versions 8.x antérieures à 8.0.5
	Suricata	Suricata	Suricata versions antérieures à 7.0.16

References

Title

Publication Time

FKIE_CVE-2026-45747

Vulnerability from fkie_nvd - Published: 2026-09-10 15:17 - Updated: 2026-09-10 19:54

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
	security-advisories@github.com	https://github.com/OISF/suricata/security/advisories/GHSA-vfc5-9844-rmhv
	security-advisories@github.com	https://redmine.openinfosecfoundation.org/issues/6286
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://redmine.openinfosecfoundation.org/issues/6286

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "suricata",
          "vendor": "OISF",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.0.16"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible."
    }
  ],
  "id": "CVE-2026-45747",
  "lastModified": "2026-09-10T19:54:25.810",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "version": "2.0.3"
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  },
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  "references": [
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      "url": "https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/OISF/suricata/security/advisories/GHSA-vfc5-9844-rmhv"
    },
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      "source": "security-advisories@github.com",
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          "lang": "en",
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        }
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      "type": "Secondary"
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}

ubuntu-cve-2026-45747

Vulnerability from osv_ubuntu

Published

2026-09-11 00:00

Modified

2026-09-11 00:00

Summary

Details

(Suricata is a network Intrusion Detection System, Intrusion Prevention ...)

Severity

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-45747	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-45747	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "suricata",
            "binary_version": "3.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "suricata",
        "purl": "pkg:deb/ubuntu/suricata@3.0-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.8-1build1",
        "2.0.9-1",
        "2.0.10-1",
        "2.0.10-2",
        "2.0.11-1",
        "3.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhtp-0.5.23-1",
            "binary_version": "3.2-2ubuntu3"
          },
          {
            "binary_name": "suricata",
            "binary_version": "3.2-2ubuntu3"
          },
          {
            "binary_name": "suricata-hyperscan",
            "binary_version": "3.2-2ubuntu3"
          },
          {
            "binary_name": "suricata-oinkmaster",
            "binary_version": "3.2-2ubuntu3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "suricata",
        "purl": "pkg:deb/ubuntu/suricata@3.2-2ubuntu3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.2-2ubuntu3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "suricata",
            "binary_version": "1:6.0.4-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "suricata",
        "purl": "pkg:deb/ubuntu/suricata@1:6.0.4-3?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:6.0.4-2",
        "1:6.0.4-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "suricata",
            "binary_version": "1:7.0.3-1build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "suricata",
        "purl": "pkg:deb/ubuntu/suricata@1:7.0.3-1build3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:7.0.0-2",
        "1:7.0.2-1",
        "1:7.0.2-1build1",
        "1:7.0.3-1build1",
        "1:7.0.3-1build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "suricata",
            "binary_version": "1:8.0.3-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "suricata",
        "purl": "pkg:deb/ubuntu/suricata@1:8.0.3-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:7.0.10-1",
        "1:8.0.1-3build1",
        "1:8.0.2-1",
        "1:8.0.2-1build1",
        "1:8.0.3-1"
      ]
    }
  ],
  "aliases": [],
  "details": "(Suricata is a network Intrusion Detection System, Intrusion Prevention ...)",
  "id": "UBUNTU-CVE-2026-45747",
  "modified": "2026-09-11T00:00:00Z",
  "published": "2026-09-11T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-45747"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45747"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-45747"
  ]
}

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.

Action not permitted

CVE-2026-45747 (GCVE-0-2026-45747)

CERTFR-2026-AVI-0614

Solutions

FKIE_CVE-2026-45747

ubuntu-cve-2026-45747

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature