Vulnerability-Lookup

CVE-2023-24021 (GCVE-0-2023-24021)

Vulnerability from cvelistv5 – Published: 2023-01-20 00:00 – Updated: 2025-04-02 16:18

Summary

Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the FILES_TMP_CONTENT collection.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-02 16:17 UTC

CWE

n/a
CWE-170 - Improper Null Termination

Assigner

mitre mitre root

References

7 references

URL	Tags
https://github.com/SpiderLabs/ModSecurity/release…
https://github.com/SpiderLabs/ModSecurity/pull/2857
https://github.com/SpiderLabs/ModSecurity/pull/28…
https://lists.debian.org/debian-lts-announce/2023…	mailing-list
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory

Show details on NVD website

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To clipboard

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          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-170"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T06:26:42+00:00",
      "cve": "CVE-2023-24021",
      "id": "CVE-2023-24021",
      "initial_release_date": "2023-01-20T00:00:00+00:00",
      "product_status:fixed": "7",
      "product_status:known_affected": "10",
      "product_status:known_not_affected": "99",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "modsecurity: lacking the complete content in FILES_TMP_CONTENT leads to web application firewall bypass",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-24021.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-02T01:54:27Z",
      "cve": "CVE-2023-24021",
      "id": "CVE-2023-24021",
      "initial_release_date": "2023-02-15T03:21:23Z",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "17",
      "product_status:recommended": "39",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-24021",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-24021.json",
      "version": "20"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-02T10:49:08.810Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://github.com/SpiderLabs/ModSecurity/releases/tag/v2.9.7"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://github.com/SpiderLabs/ModSecurity/pull/2857"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://github.com/SpiderLabs/ModSecurity/pull/2857/commits/4324f0ac59f8225aa44bc5034df60dbeccd1d334"
              },
              {
                "name": "[debian-lts-announce] 20230126 [SECURITY] [DLA 3283-1] modsecurity-apache security update",
                "tags": [
                  "mailing-list",
                  "x_transferred"
                ],
                "url": "https://lists.debian.org/debian-lts-announce/2023/01/msg00023.html"
              },
              {
                "name": "FEDORA-2023-8aa264d5c5",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WCH6JM4I4MD4YABYFHSBDDOUFDGIFJKL/"
              },
              {
                "name": "FEDORA-2023-09f0496e60",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/52TGCZCOHYBDCVWJYNN2PS4QLOHCXWTQ/"
              },
              {
                "name": "FEDORA-2023-bc61f7a145",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYRTXTOQQI6SB2TLI5QXU76DURSLS4XI/"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "NONE",
                  "baseScore": 7.5,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2023-24021",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-04-02T16:17:41.632356Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-170",
                    "description": "CWE-170 Improper Null Termination",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-04-02T16:18:24.236Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "n/a",
              "vendor": "n/a",
              "versions": [
                {
                  "status": "affected",
                  "version": "n/a"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Incorrect handling of \u0027\\0\u0027 bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the FILES_TMP_CONTENT collection."
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "description": "n/a",
                  "lang": "en",
                  "type": "text"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2023-04-22T02:06:14.171Z",
            "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
            "shortName": "mitre"
          },
          "references": [
            {
              "url": "https://github.com/SpiderLabs/ModSecurity/releases/tag/v2.9.7"
            },
            {
              "url": "https://github.com/SpiderLabs/ModSecurity/pull/2857"
            },
            {
              "url": "https://github.com/SpiderLabs/ModSecurity/pull/2857/commits/4324f0ac59f8225aa44bc5034df60dbeccd1d334"
            },
            {
              "name": "[debian-lts-announce] 20230126 [SECURITY] [DLA 3283-1] modsecurity-apache security update",
              "tags": [
                "mailing-list"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2023/01/msg00023.html"
            },
            {
              "name": "FEDORA-2023-8aa264d5c5",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WCH6JM4I4MD4YABYFHSBDDOUFDGIFJKL/"
            },
            {
              "name": "FEDORA-2023-09f0496e60",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/52TGCZCOHYBDCVWJYNN2PS4QLOHCXWTQ/"
            },
            {
              "name": "FEDORA-2023-bc61f7a145",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYRTXTOQQI6SB2TLI5QXU76DURSLS4XI/"
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "cveId": "CVE-2023-24021",
        "datePublished": "2023-01-20T00:00:00.000Z",
        "dateReserved": "2023-01-20T00:00:00.000Z",
        "dateUpdated": "2025-04-02T16:18:27.850Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

SUSE-SU-2023:0431-1

Vulnerability from csaf_suse - Published: 2023-02-15 16:43 - Updated: 2023-02-15 16:43

Summary

Security update for apache2-mod_security2

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2023-24021.

CVE-2023-24021

7.5 (High)


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

Recommended: 8 products

Open the full advisory

SUSE-SU-2023:0447-1

Vulnerability from csaf_suse - Published: 2023-02-17 13:24 - Updated: 2023-02-17 13:24

Summary

Security update for apache2-mod_security2

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2023-24021.

CVE-2023-24021

7.5 (High)


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

Recommended: 36 products

Open the full advisory

UBUNTU-CVE-2023-24021 (CVE-2023-24021)

Vulnerability from osv_ubuntu – Published: 2023-01-20 19:15 – Updated: 2025-10-24 05:01 – Source website

Details

Severity

7.5 (High)


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

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2023-24021	REPORT
	https://github.com/SpiderLabs/ModSecurity/pull/2857	REPORT
	https://github.com/SpiderLabs/ModSecurity/commit/…	REPORT
	https://github.com/SpiderLabs/ModSecurity/pull/28…	REPORT
	https://github.com/SpiderLabs/ModSecurity/release…	REPORT
	https://ubuntu.com/security/notices/USN-6370-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2023-24021	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libapache2-mod-security2",
            "binary_version": "2.9.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libapache2-modsecurity",
            "binary_version": "2.9.0-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "modsecurity-apache",
        "purl": "pkg:deb/ubuntu/modsecurity-apache@2.9.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.9.0-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libapache2-mod-security2",
            "binary_version": "2.9.2-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "modsecurity-apache",
        "purl": "pkg:deb/ubuntu/modsecurity-apache@2.9.2-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.9.2-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.1-3",
        "2.9.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libapache2-mod-security2",
            "binary_version": "2.9.3-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "modsecurity-apache",
        "purl": "pkg:deb/ubuntu/modsecurity-apache@2.9.3-1ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.9.3-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.3-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libapache2-mod-security2",
            "binary_version": "2.9.5-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "modsecurity-apache",
        "purl": "pkg:deb/ubuntu/modsecurity-apache@2.9.5-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.9.5-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.3-3",
        "2.9.5-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Incorrect handling of \u0027\\0\u0027 bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the FILES_TMP_CONTENT collection.",
  "id": "UBUNTU-CVE-2023-24021",
  "modified": "2025-10-24T05:01:48Z",
  "published": "2023-01-20T19:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-24021"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/SpiderLabs/ModSecurity/pull/2857"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/SpiderLabs/ModSecurity/commit/4324f0ac59f8225aa44bc5034df60dbeccd1d334"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/SpiderLabs/ModSecurity/pull/2857/commits/4324f0ac59f8225aa44bc5034df60dbeccd1d334"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/SpiderLabs/ModSecurity/releases/tag/v2.9.7"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6370-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-24021"
    }
  ],
  "related": [
    "USN-6370-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-24021"
  ]
}

WID-SEC-W-2023-0188

Vulnerability from csaf_certbund - Published: 2023-01-23 23:00 - Updated: 2025-01-29 23:00

Summary

Trustwave ModSecurity: Mehrere Schwachstellen ermöglichen Umgehen von Sicherheitsvorkehrungen

Severity

Mittel

Scope

2 vulnerabilities in this advisory, including CVE-2023-24021.

CVE-2023-24021

In Trustwave ModSecurity existieren mehrere Schwachstellen. Diese sind auf Fehler bei der Verarbeitung von HTTP-Anfragen zurückzuführen sowie auf einen Fehler beim Verarbeiten von TMP-Dateien. Ein entfernter, anonymer Angreifer kann diese Schwachstellen ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

Known affected: 11 products

Open the full advisory

WID-SEC-W-2023-2031

Vulnerability from csaf_certbund - Published: 2023-08-09 22:00 - Updated: 2025-10-19 22:00

Summary

Xerox FreeFlow Print Server: Mehrere Schwachstellen

Severity

Hoch

Scope

243 vulnerabilities in this advisory, including CVE-2023-24021.

CVE-2023-24021

Known affected: 6 products

Open the full advisory

WID-SEC-W-2024-0899

Vulnerability from csaf_certbund - Published: 2024-04-16 22:00 - Updated: 2025-06-09 22:00

Summary

Oracle Fusion Middleware: Mehrere Schwachstellen

Severity

Hoch

Scope

38 vulnerabilities in this advisory, including CVE-2023-24021.

CVE-2023-24021

Known affected: 5 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-2023-24021 (GCVE-0-2023-24021)

SUSE-SU-2023:0431-1

SUSE-SU-2023:0447-1

UBUNTU-CVE-2023-24021 (CVE-2023-24021)

WID-SEC-W-2023-0188

WID-SEC-W-2023-2031

WID-SEC-W-2024-0899

Tags

Sightings

Nomenclature

Related by attack behaviour