Vulnerability-Lookup

rlsa-2023:7090

Vulnerability from osv_rocky

Published

2026-06-25 12:00

Modified

2026-07-09 12:06

Summary

Moderate: libmicrohttpd security update

Details

GNU libmicrohttpd is a small C library that makes it easy to run an HTTP server as part of another application.

Security Fix(es):

libmicrohttpd: remote DoS (CVE-2023-27371)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.9 Release Notes linked from the References section.

Severity

5.9 (Medium)


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

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2023:7090	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2174313	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:8",
        "name": "libmicrohttpd",
        "purl": "pkg:rpm/rocky-linux/libmicrohttpd?distro=rocky-linux-8\u0026epoch=1"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "BaseOS"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:0.9.59-3.el8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "details": "GNU libmicrohttpd is a small C library that makes it easy to run an HTTP server as part of another application.\n\nSecurity Fix(es):\n\n* libmicrohttpd: remote DoS (CVE-2023-27371)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 8.9 Release Notes linked from the References section.",
  "id": "RLSA-2023:7090",
  "modified": "2026-07-09T12:06:23.631045Z",
  "published": "2026-06-25T12:00:44.845974Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2023:7090"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2174313"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Moderate: libmicrohttpd security update",
  "upstream": [
    "CVE-2023-27371"
  ]
}

CVE-2023-27371 (GCVE-0-2023-27371)

Vulnerability from cvelistv5 – Published: 2023-02-28 00:00 – Updated: 2025-03-11 15:19

Summary

GNU libmicrohttpd before 0.9.76 allows remote DoS (Denial of Service) due to improper parsing of a multipart/form-data boundary in the postprocessor.c MHD_create_post_processor() method. This allows an attacker to remotely send a malicious HTTP POST packet that includes one or more '\0' bytes in a multipart/form-data boundary field, which - assuming a specific heap layout - will result in an out-of-bounds read and a crash in the find_boundary() function.

Severity

5.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

Assigner

mitre

References

4 references

URL	Tags
https://git.gnunet.org/libmicrohttpd.git/commit/?…
https://github.com/0xhebi/CVEs/tree/main/GNU%20Li…
https://lists.gnu.org/archive/html/libmicrohttpd/…
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T12:09:43.349Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.gnunet.org/libmicrohttpd.git/commit/?id=6d6846e20bfdf4b3eb1b592c97520a532f724238"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/0xhebi/CVEs/tree/main/GNU%20Libmicrohttpd"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.gnu.org/archive/html/libmicrohttpd/2023-02/msg00000.html"
          },
          {
            "name": "[debian-lts-announce] 20230330 [SECURITY] [DLA 3374-1] libmicrohttpd security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00029.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-27371",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-11T15:18:56.784683Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-11T15:19:04.055Z",
          "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": "GNU libmicrohttpd before 0.9.76 allows remote DoS (Denial of Service) due to improper parsing of a multipart/form-data boundary in the postprocessor.c MHD_create_post_processor() method. This allows an attacker to remotely send a malicious HTTP POST packet that includes one or more \u0027\\0\u0027 bytes in a multipart/form-data boundary field, which - assuming a specific heap layout - will result in an out-of-bounds read and a crash in the find_boundary() function."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AC:H/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-03-30T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://git.gnunet.org/libmicrohttpd.git/commit/?id=6d6846e20bfdf4b3eb1b592c97520a532f724238"
        },
        {
          "url": "https://github.com/0xhebi/CVEs/tree/main/GNU%20Libmicrohttpd"
        },
        {
          "url": "https://lists.gnu.org/archive/html/libmicrohttpd/2023-02/msg00000.html"
        },
        {
          "name": "[debian-lts-announce] 20230330 [SECURITY] [DLA 3374-1] libmicrohttpd security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00029.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-27371",
    "datePublished": "2023-02-28T00:00:00.000Z",
    "dateReserved": "2023-02-28T00:00:00.000Z",
    "dateUpdated": "2025-03-11T15:19:04.055Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Action not permitted

rlsa-2023:7090

Vulnerability from osv_rocky

CVE-2023-27371 (GCVE-0-2023-27371)

Tags

Sightings

Nomenclature