gsd-2019-16905
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.
Aliases
Aliases
CVE-2019-16905


To clipboard 

{
   GSD: {
      alias: "CVE-2019-16905",
      description: "OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.",
      id: "GSD-2019-16905",
      references: [
         "https://www.suse.com/security/cve/CVE-2019-16905.html",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2019-16905",
         ],
         details: "OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.",
         id: "GSD-2019-16905",
         modified: "2023-12-13T01:23:40.972414Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "cve@mitre.org",
            ID: "CVE-2019-16905",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "n/a",
                              version: {
                                 version_data: [
                                    {
                                       version_value: "n/a",
                                    },
                                 ],
                              },
                           },
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                     },
                     vendor_name: "n/a",
                  },
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               },
            ],
         },
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                        value: "n/a",
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         },
         references: {
            reference_data: [
               {
                  name: "https://www.openssh.com/releasenotes.html",
                  refsource: "CONFIRM",
                  url: "https://www.openssh.com/releasenotes.html",
               },
               {
                  name: "https://www.openwall.com/lists/oss-security/2019/10/09/1",
                  refsource: "CONFIRM",
                  url: "https://www.openwall.com/lists/oss-security/2019/10/09/1",
               },
               {
                  name: "https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h",
                  refsource: "MISC",
                  url: "https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h",
               },
               {
                  name: "https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c",
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                  url: "https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c",
               },
               {
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               {
                  name: "https://0day.life/exploits/0day-1009.html",
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                  url: "https://0day.life/exploits/0day-1009.html",
               },
               {
                  name: "https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow",
                  refsource: "MISC",
                  url: "https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow",
               },
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                  refsource: "CONFIRM",
                  url: "https://security.netapp.com/advisory/ntap-20191024-0003/",
               },
               {
                  name: "GLSA-201911-01",
                  refsource: "GENTOO",
                  url: "https://security.gentoo.org/glsa/201911-01",
               },
               {
                  name: "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
                  refsource: "CONFIRM",
                  url: "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
               },
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         },
      },
      "nvd.nist.gov": {
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                        versionEndIncluding: "7.9",
                        versionStartIncluding: "7.7",
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "8.1",
                        versionStartIncluding: "8.0",
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                     },
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                  operator: "OR",
               },
               {
                  children: [],
                  cpe_match: [
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                              cpe_name: [],
                              versionEndExcluding: "3.2.7",
                              vulnerable: true,
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                        operator: "OR",
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                  cpe_match: [],
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         cve: {
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               ASSIGNER: "cve@mitre.org",
               ID: "CVE-2019-16905",
            },
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
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            problemtype: {
               problemtype_data: [
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                     description: [
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                           value: "CWE-190",
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            },
            references: {
               reference_data: [
                  {
                     name: "https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h",
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                     url: "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
                  },
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         },
         impact: {
            baseMetricV2: {
               acInsufInfo: false,
               cvssV2: {
                  accessComplexity: "MEDIUM",
                  accessVector: "LOCAL",
                  authentication: "NONE",
                  availabilityImpact: "PARTIAL",
                  baseScore: 4.4,
                  confidentialityImpact: "PARTIAL",
                  integrityImpact: "PARTIAL",
                  vectorString: "AV:L/AC:M/Au:N/C:P/I:P/A:P",
                  version: "2.0",
               },
               exploitabilityScore: 3.4,
               impactScore: 6.4,
               obtainAllPrivilege: false,
               obtainOtherPrivilege: false,
               obtainUserPrivilege: false,
               severity: "MEDIUM",
               userInteractionRequired: false,
            },
            baseMetricV3: {
               cvssV3: {
                  attackComplexity: "LOW",
                  attackVector: "LOCAL",
                  availabilityImpact: "HIGH",
                  baseScore: 7.8,
                  baseSeverity: "HIGH",
                  confidentialityImpact: "HIGH",
                  integrityImpact: "HIGH",
                  privilegesRequired: "LOW",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  version: "3.1",
               },
               exploitabilityScore: 1.8,
               impactScore: 5.9,
            },
         },
         lastModifiedDate: "2023-03-01T01:56Z",
         publishedDate: "2019-10-09T20:15Z",
      },
   },
}


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