Vulnerability-Lookup

OESA-2024-2584 (CVE-2023-42118)

Vulnerability from osv_openeuler – Published: 2024-12-27 11:08 – Updated: 2026-08-06 11:08 – Source website

Summary

libspf2 security update

Details

libspf2 is an implementation of the SPF (Sender Policy Framework) specification as found at: http://www.ietf.org/internet-drafts/draft-mengwong-spf-00.txt SPF allows email systems to check SPF DNS records and make sure that an email is authorized by the administrator of the domain name that it is coming from. This prevents email forgery, commonly used by spammers, scammers, and email viruses/worms.

Security Fix(es):

The specific flaw exists within the parsing of SPF macros. When parsing SPF macros, the process does not properly validate user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the service account. . Was ZDI-CAN-17578.(CVE-2023-42118)

Severity

7.5 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-42118	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libspf2-1.2.11-2.oe2203sp4.aarch64.rpm",
          "libspf2-debuginfo-1.2.11-2.oe2203sp4.aarch64.rpm",
          "libspf2-debugsource-1.2.11-2.oe2203sp4.aarch64.rpm",
          "libspf2-devel-1.2.11-2.oe2203sp4.aarch64.rpm",
          "libspf2-progs-1.2.11-2.oe2203sp4.aarch64.rpm",
          "perl-Mail-SPF_XS-1.2.11-2.oe2203sp4.aarch64.rpm"
        ],
        "noarch": [
          "libspf2-apidocs-1.2.11-2.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "libspf2-1.2.11-2.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "libspf2-1.2.11-2.oe2203sp4.x86_64.rpm",
          "libspf2-debuginfo-1.2.11-2.oe2203sp4.x86_64.rpm",
          "libspf2-debugsource-1.2.11-2.oe2203sp4.x86_64.rpm",
          "libspf2-devel-1.2.11-2.oe2203sp4.x86_64.rpm",
          "libspf2-progs-1.2.11-2.oe2203sp4.x86_64.rpm",
          "perl-Mail-SPF_XS-1.2.11-2.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "libspf2",
        "purl": "pkg:rpm/openEuler/libspf2\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.11-2.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "libspf2 is an implementation of the SPF (Sender Policy Framework) specification as found at: http://www.ietf.org/internet-drafts/draft-mengwong-spf-00.txt SPF allows email systems to check SPF DNS records and make sure that an email is authorized by the administrator of the domain name that it is coming from. This prevents email forgery, commonly used by spammers, scammers, and email viruses/worms.\r\n\r\nSecurity Fix(es):\r\n\r\nExim libspf2 Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Exim libspf2. Authentication is not required to exploit this vulnerability. \r\n\r\nThe specific flaw exists within the parsing of SPF macros. When parsing SPF macros, the process does not properly validate user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the service account.\n. Was ZDI-CAN-17578.(CVE-2023-42118)",
  "id": "OESA-2024-2584",
  "modified": "2026-08-06T11:08:04Z",
  "published": "2024-12-27T11:08:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2584"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42118"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libspf2 security update",
  "upstream": [
    "CVE-2023-42118"
  ]
}

CVE-2023-42118 (GCVE-0-2023-42118)

Vulnerability from cvelistv5 – Published: 2024-05-03 02:13 – Updated: 2025-03-28 12:04

Title

Exim libspf2 Integer Underflow Remote Code Execution Vulnerability

Summary

Exim libspf2 Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Exim libspf2. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of SPF macros. When parsing SPF macros, the process does not properly validate user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the service account. . Was ZDI-CAN-17578.

Severity

7.5 (High)


                        
                          CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-03 14:45 UTC

CWE

CWE-191 - Integer Underflow (Wrap or Wraparound)

Assigner

zdi mitre root

References

2 references

URL	Tags
https://www.zerodayinitiative.com/advisories/ZDI-…	x_research-advisory
http://www.openwall.com/lists/oss-security/2025/03/28/1

Impacted products

2 products

Vendor	Product	Version
Exim	libspf2	Affected: exim 4.96-RC0-14-24b8ed847-XX
exim	libspf2	Affected: 0 , < * (custom) cpe:2.3:a:exim:libspf2::::::::

Date Public

2023-09-27 22:21

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:exim:libspf2:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "libspf2",
            "vendor": "exim",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-42118",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-03T14:45:10.464774Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-03T20:58:33.989Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-03-28T12:04:20.804Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "ZDI-23-1472",
            "tags": [
              "x_research-advisory",
              "x_transferred"
            ],
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1472/"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/03/28/1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "libspf2",
          "vendor": "Exim",
          "versions": [
            {
              "status": "affected",
              "version": "exim 4.96-RC0-14-24b8ed847-XX"
            }
          ]
        }
      ],
      "dateAssigned": "2023-09-06T21:25:45.475Z",
      "datePublic": "2023-09-27T22:21:14.249Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Exim libspf2 Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Exim libspf2. Authentication is not required to exploit this vulnerability. \n\nThe specific flaw exists within the parsing of SPF macros. When parsing SPF macros, the process does not properly validate user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the service account.\n. Was ZDI-CAN-17578."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-191",
              "description": "CWE-191: Integer Underflow (Wrap or Wraparound)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-09-18T18:30:11.548Z",
        "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "shortName": "zdi"
      },
      "references": [
        {
          "name": "ZDI-23-1472",
          "tags": [
            "x_research-advisory"
          ],
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1472/"
        }
      ],
      "source": {
        "lang": "en",
        "value": "Anonymous"
      },
      "title": "Exim libspf2 Integer Underflow Remote Code Execution Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
    "assignerShortName": "zdi",
    "cveId": "CVE-2023-42118",
    "datePublished": "2024-05-03T02:13:26.055Z",
    "dateReserved": "2023-09-06T21:14:24.436Z",
    "dateUpdated": "2025-03-28T12:04:20.804Z",
    "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.
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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.

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OESA-2024-2584 (CVE-2023-42118)

CVE-2023-42118 (GCVE-0-2023-42118)

Tags

Sightings

Nomenclature

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