github - ghsa-7m4v-cwm7-4f2m

GHSA-7M4V-CWM7-4F2M

Vulnerability from github – Published: 2024-07-04 15:30 – Updated: 2024-07-09 18:30

Details

Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protection mechanism, and potentially deliver executable attachments to the mailboxes of end users.

Severity ?

5.4 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2024-39929"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-116"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-04T15:15:10Z",
    "severity": "MODERATE"
  },
  "details": "Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protection mechanism, and potentially deliver executable attachments to the mailboxes of end users.",
  "id": "GHSA-7m4v-cwm7-4f2m",
  "modified": "2024-07-09T18:30:43Z",
  "published": "2024-07-04T15:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-39929"
    },
    {
      "type": "WEB",
      "url": "https://bugs.exim.org/show_bug.cgi?id=3099#c4"
    },
    {
      "type": "WEB",
      "url": "https://git.exim.org/exim.git/commit/1b3209b0577a9327ebb076f3b32b8a159c253f7b"
    },
    {
      "type": "WEB",
      "url": "https://git.exim.org/exim.git/commit/6ce5c70cff8989418e05d01fd2a57703007a6357"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Exim/exim/compare/exim-4.98-RC2...exim-4.98-RC3"
    },
    {
      "type": "WEB",
      "url": "https://www.rfc-editor.org/rfc/rfc2231.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-39929 (GCVE-0-2024-39929)

Vulnerability from cvelistv5 – Published: 2024-07-04 00:00 – Updated: 2025-03-18 15:37

Summary

Severity ?

5.4 (Medium)


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

CWE

Assigner

mitre

References

URL

Tags

	https://git.exim.org/exim.git/commit/6ce5c70cff89…
	https://git.exim.org/exim.git/commit/1b3209b0577a…
	https://github.com/Exim/exim/compare/exim-4.98-RC…
	https://www.rfc-editor.org/rfc/rfc2231.txt
	https://bugs.exim.org/show_bug.cgi?id=3099#c4

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "exim",
            "vendor": "exim",
            "versions": [
              {
                "lessThanOrEqual": "4.97.1",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.4,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-39929",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-08T16:09:08.280186Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-116",
                "description": "CWE-116 Improper Encoding or Escaping of Output",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-18T15:37:58.804Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T04:33:11.626Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.exim.org/exim.git/commit/6ce5c70cff8989418e05d01fd2a57703007a6357"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.exim.org/exim.git/commit/1b3209b0577a9327ebb076f3b32b8a159c253f7b"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/Exim/exim/compare/exim-4.98-RC2...exim-4.98-RC3"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.rfc-editor.org/rfc/rfc2231.txt"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugs.exim.org/show_bug.cgi?id=3099#c4"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protection mechanism, and potentially deliver executable attachments to the mailboxes of end users."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-07-04T14:47:11.317Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://git.exim.org/exim.git/commit/6ce5c70cff8989418e05d01fd2a57703007a6357"
        },
        {
          "url": "https://git.exim.org/exim.git/commit/1b3209b0577a9327ebb076f3b32b8a159c253f7b"
        },
        {
          "url": "https://github.com/Exim/exim/compare/exim-4.98-RC2...exim-4.98-RC3"
        },
        {
          "url": "https://www.rfc-editor.org/rfc/rfc2231.txt"
        },
        {
          "url": "https://bugs.exim.org/show_bug.cgi?id=3099#c4"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2024-39929",
    "datePublished": "2024-07-04T00:00:00.000Z",
    "dateReserved": "2024-07-04T00:00:00.000Z",
    "dateUpdated": "2025-03-18T15:37:58.804Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-7M4V-CWM7-4F2M

CVE-2024-39929 (GCVE-0-2024-39929)

Tags

Sightings

Nomenclature