cve-2024-23336
Vulnerability from cvelistv5
Published
2024-05-01 06:27
Modified
2024-08-01 22:59
Severity ?
5.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Summary
MyBB is a free and open source forum software. The default list of disallowed remote hosts does not contain the `127.0.0.0/8` block, which may result in a Server-Side Request Forgery (SSRF) vulnerability. The Configuration File's _Disallowed Remote Addresses_ list (`$config['disallowed_remote_addresses']`) contains the address `127.0.0.1`, but does not include the complete block `127.0.0.0/8`. MyBB 1.8.38 resolves this issue in default installations. Administrators of installed boards should update the existing configuration (`inc/config.php`) to include all addresses blocked by default. Additionally, users are advised to verify that it includes any other IPv4 addresses resolving to the server and other internal resources. Users unable to upgrade may manually add 127.0.0.0/8' to their disallowed address list.
References
security-advisories@github.comhttps://docs.mybb.com/1.8/administration/configuration-file
security-advisories@github.comhttps://github.com/mybb/mybb/commit/d6a96019025de9149014e06b1df252e6122e5630
security-advisories@github.comhttps://github.com/mybb/mybb/security/advisories/GHSA-qfrj-65mv-h75h
security-advisories@github.comhttps://mybb.com/versions/1.8.38
af854a3a-2127-422b-91ae-364da2661108https://docs.mybb.com/1.8/administration/configuration-file
af854a3a-2127-422b-91ae-364da2661108https://github.com/mybb/mybb/commit/d6a96019025de9149014e06b1df252e6122e5630
af854a3a-2127-422b-91ae-364da2661108https://github.com/mybb/mybb/security/advisories/GHSA-qfrj-65mv-h75h
af854a3a-2127-422b-91ae-364da2661108https://mybb.com/versions/1.8.38
Impacted products
Vendor Product Version
mybb mybb Version: < 1.8.38
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{
   containers: {
      adp: [
         {
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                  cpes: [
                     "cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:*",
                  ],
                  defaultStatus: "unknown",
                  product: "mybb",
                  vendor: "mybb",
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                        version: "0",
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            metrics: [
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                     content: {
                        id: "CVE-2024-23336",
                        options: [
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                              Exploitation: "none",
                           },
                           {
                              Automatable: "no",
                           },
                           {
                              "Technical Impact": "partial",
                           },
                        ],
                        role: "CISA Coordinator",
                        timestamp: "2024-05-01T13:48:54.371730Z",
                        version: "2.0.3",
                     },
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               orgId: "134c704f-9b21-4f2e-91b3-4a467353bcc0",
               shortName: "CISA-ADP",
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                  tags: [
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                  url: "https://mybb.com/versions/1.8.38",
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            title: "CVE Program Container",
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      cna: {
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               product: "mybb",
               vendor: "mybb",
               versions: [
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                     status: "affected",
                     version: "< 1.8.38",
                  },
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         descriptions: [
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               lang: "en",
               value: "MyBB is a free and open source forum software. The default list of disallowed remote hosts does not contain the `127.0.0.0/8` block, which may result in a Server-Side Request Forgery (SSRF) vulnerability. The Configuration File's _Disallowed Remote Addresses_ list (`$config['disallowed_remote_addresses']`) contains the address `127.0.0.1`, but does not include the complete block `127.0.0.0/8`. MyBB 1.8.38 resolves this issue in default installations. Administrators of installed boards should update the existing configuration (`inc/config.php`) to include all addresses blocked by default. Additionally, users are advised to verify that it includes any other IPv4 addresses resolving to the server and other internal resources. Users unable to upgrade may manually add 127.0.0.0/8' to their disallowed address list.",
            },
         ],
         metrics: [
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                  attackComplexity: "HIGH",
                  attackVector: "NETWORK",
                  availabilityImpact: "LOW",
                  baseScore: 5,
                  baseSeverity: "MEDIUM",
                  confidentialityImpact: "LOW",
                  integrityImpact: "LOW",
                  privilegesRequired: "LOW",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
                  version: "3.1",
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            },
         ],
         source: {
            advisory: "GHSA-qfrj-65mv-h75h",
            discovery: "UNKNOWN",
         },
         title: "Incomplete disallowed remote addresses list in MyBB",
      },
   },
   cveMetadata: {
      assignerOrgId: "a0819718-46f1-4df5-94e2-005712e83aaa",
      assignerShortName: "GitHub_M",
      cveId: "CVE-2024-23336",
      datePublished: "2024-05-01T06:27:37.987Z",
      dateReserved: "2024-01-15T15:19:19.443Z",
      dateUpdated: "2024-08-01T22:59:32.176Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
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      vulnrichment: {
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}


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