Vulnerability-Lookup

OESA-2024-2105 (CVE-2024-39929)

Vulnerability from osv_openeuler – Published: 2024-09-06 11:07 – Updated: 2026-08-06 11:07 – Source website

Summary

exim security update

Details

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet. It is freely available under the terms of the GNU General Public Licence. In style it is similar to Smail 3, but its facilities are more general. There is a great deal of flexibility in the way mail can be routed, and there are extensive facilities for checking incoming mail. Exim can be installed in place of sendmail, although the configuration of exim is quite different to that of sendmail.

Security Fix(es):

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.(CVE-2024-39929)

Severity

5.4 (Medium)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2024-39929	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "exim-4.96-4.oe2203sp4.aarch64.rpm",
          "exim-clamav-4.96-4.oe2203sp4.aarch64.rpm",
          "exim-debuginfo-4.96-4.oe2203sp4.aarch64.rpm",
          "exim-debugsource-4.96-4.oe2203sp4.aarch64.rpm",
          "exim-greylist-4.96-4.oe2203sp4.aarch64.rpm",
          "exim-mon-4.96-4.oe2203sp4.aarch64.rpm",
          "exim-mysql-4.96-4.oe2203sp4.aarch64.rpm",
          "exim-pgsql-4.96-4.oe2203sp4.aarch64.rpm"
        ],
        "src": [
          "exim-4.96-4.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "exim-4.96-4.oe2203sp4.x86_64.rpm",
          "exim-clamav-4.96-4.oe2203sp4.x86_64.rpm",
          "exim-debuginfo-4.96-4.oe2203sp4.x86_64.rpm",
          "exim-debugsource-4.96-4.oe2203sp4.x86_64.rpm",
          "exim-greylist-4.96-4.oe2203sp4.x86_64.rpm",
          "exim-mon-4.96-4.oe2203sp4.x86_64.rpm",
          "exim-mysql-4.96-4.oe2203sp4.x86_64.rpm",
          "exim-pgsql-4.96-4.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "exim",
        "purl": "pkg:rpm/openEuler/exim\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.96-4.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet. It is freely available under the terms of the GNU General Public Licence. In style it is similar to Smail 3, but its facilities are more general. There is a great deal of flexibility in the way mail can be routed, and there are extensive facilities for checking incoming mail. Exim can be installed in place of sendmail, although the configuration of exim is quite different to that of sendmail.\r\n\r\nSecurity Fix(es):\r\n\r\nExim 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.(CVE-2024-39929)",
  "id": "OESA-2024-2105",
  "modified": "2026-08-06T11:07:34Z",
  "published": "2024-09-06T11:07:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2105"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-39929"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "exim security update",
  "upstream": [
    "CVE-2024-39929"
  ]
}

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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-08 16:09 UTC

CWE

n/a
CWE-116 - Improper Encoding or Escaping of Output

Assigner

mitre mitre root

References

5 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

Impacted products

1 product

Vendor	Product	Version
exim	exim	Affected: 0 , ≤ 4.97.1 (custom) cpe:2.3:a:exim:exim::::::::

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	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.