fkie_cve-2023-6918
Vulnerability from fkie_nvd
Published
2023-12-19 00:15
Modified
2025-02-15 01:15
Severity ?
3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:2504
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:3233
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2023-6918Mailing List, Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2254997Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://www.libssh.org/2023/12/18/libssh-0-10-6-and-libssh-0-9-8-security-releases/Release Notes
secalert@redhat.comhttps://www.libssh.org/security/advisories/CVE-2023-6918.txtVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:2504
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:3233
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-6918Mailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2254997Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MKQRBF3DWMWPH36LBCOBUTSIZRTPEZXB/
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20250214-0009/
af854a3a-2127-422b-91ae-364da2661108https://www.libssh.org/2023/12/18/libssh-0-10-6-and-libssh-0-9-8-security-releases/Release Notes
af854a3a-2127-422b-91ae-364da2661108https://www.libssh.org/security/advisories/CVE-2023-6918.txtVendor Advisory
Impacted products
Vendor Product Version
libssh libssh *
libssh libssh *
fedoraproject fedora 38
fedoraproject fedora 39
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "4836788D-9936-404F-B0A8-DDDAC3969F20",
                     versionEndExcluding: "0.9.8",
                     versionStartIncluding: "0.9.0",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*",
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                     versionEndExcluding: "0.10.6",
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      {
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            {
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                     matchCriteriaId: "CC559B26-5DFC-4B7A-A27C-B77DE755DFF9",
                     vulnerable: true,
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                     matchCriteriaId: "B8EDB836-4E6A-4B71-B9B2-AA3E03E0F646",
                     vulnerable: true,
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                     vulnerable: true,
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   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection.",
      },
      {
         lang: "es",
         value: "Se encontró un fallo en la capa abstracta de implementación de libssh para operaciones de resumen de mensajes (MD) implementadas por diferentes backends criptográficos compatibles. Los valores de retorno de estos no se verificaron correctamente, lo que podría causar fallas en situaciones de poca memoria, desreferencias NULL, fallas o uso de la memoria no inicializada como entrada para el KDF. En este caso, las claves que no coinciden resultarán en fallas de descifrado/integridad, lo que terminará la conexión.",
      },
   ],
   id: "CVE-2023-6918",
   lastModified: "2025-02-15T01:15:09.880",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "HIGH",
               attackVector: "NETWORK",
               availabilityImpact: "LOW",
               baseScore: 3.7,
               baseSeverity: "LOW",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
               version: "3.1",
            },
            exploitabilityScore: 2.2,
            impactScore: 1.4,
            source: "secalert@redhat.com",
            type: "Secondary",
         },
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "NETWORK",
               availabilityImpact: "LOW",
               baseScore: 5.3,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
               version: "3.1",
            },
            exploitabilityScore: 3.9,
            impactScore: 1.4,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2023-12-19T00:15:08.460",
   references: [
      {
         source: "secalert@redhat.com",
         url: "https://access.redhat.com/errata/RHSA-2024:2504",
      },
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         url: "https://access.redhat.com/errata/RHSA-2024:3233",
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      },
      {
         source: "secalert@redhat.com",
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         source: "secalert@redhat.com",
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         url: "https://access.redhat.com/errata/RHSA-2024:3233",
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         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM/",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
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      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
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   sourceIdentifier: "secalert@redhat.com",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-252",
            },
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         source: "secalert@redhat.com",
         type: "Secondary",
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               lang: "en",
               value: "CWE-252",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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