cve-2023-45287
Vulnerability from cvelistv5
Published
2023-12-05 16:18
Modified
2024-08-02 20:21
Severity ?
Summary
Before Go 1.20, the RSA based TLS key exchanges used the math/big library, which is not constant time. RSA blinding was applied to prevent timing attacks, but analysis shows this may not have been fully effective. In particular it appears as if the removal of PKCS#1 padding may leak timing information, which in turn could be used to recover session key bits. In Go 1.20, the crypto/tls library switched to a fully constant time RSA implementation, which we do not believe exhibits any timing side channels.
References
security@golang.orghttps://go.dev/cl/326012/26Issue Tracking
security@golang.orghttps://go.dev/issue/20654Issue Tracking
security@golang.orghttps://groups.google.com/g/golang-announce/c/QMK8IQALDvAMailing List, Release Notes
security@golang.orghttps://people.redhat.com/~hkario/marvin/Third Party Advisory
security@golang.orghttps://pkg.go.dev/vuln/GO-2023-2375Vendor Advisory
security@golang.orghttps://security.netapp.com/advisory/ntap-20240112-0005/
af854a3a-2127-422b-91ae-364da2661108https://go.dev/cl/326012/26Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://go.dev/issue/20654Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://groups.google.com/g/golang-announce/c/QMK8IQALDvAMailing List, Release Notes
af854a3a-2127-422b-91ae-364da2661108https://people.redhat.com/~hkario/marvin/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://pkg.go.dev/vuln/GO-2023-2375Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20240112-0005/
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T20:21:15.309Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://go.dev/issue/20654"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://go.dev/cl/326012/26"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://groups.google.com/g/golang-announce/c/QMK8IQALDvA"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://people.redhat.com/~hkario/marvin/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://pkg.go.dev/vuln/GO-2023-2375"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20240112-0005/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/tls",
          "product": "crypto/tls",
          "programRoutines": [
            {
              "name": "rsaKeyAgreement.processClientKeyExchange"
            },
            {
              "name": "rsaKeyAgreement.generateClientKeyExchange"
            },
            {
              "name": "Conn.Handshake"
            },
            {
              "name": "Conn.HandshakeContext"
            },
            {
              "name": "Conn.Read"
            },
            {
              "name": "Conn.Write"
            },
            {
              "name": "Dial"
            },
            {
              "name": "DialWithDialer"
            },
            {
              "name": "Dialer.Dial"
            },
            {
              "name": "Dialer.DialContext"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.20.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Before Go 1.20, the RSA based TLS key exchanges used the math/big library, which is not constant time. RSA blinding was applied to prevent timing attacks, but analysis shows this may not have been fully effective. In particular it appears as if the removal of PKCS#1 padding may leak timing information, which in turn could be used to recover session key bits. In Go 1.20, the crypto/tls library switched to a fully constant time RSA implementation, which we do not believe exhibits any timing side channels."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-208: Observable Timing Discrepancy",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-12-05T16:18:06.104Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/issue/20654"
        },
        {
          "url": "https://go.dev/cl/326012/26"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/QMK8IQALDvA"
        },
        {
          "url": "https://people.redhat.com/~hkario/marvin/"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2023-2375"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20240112-0005/"
        }
      ],
      "title": "Before Go 1.20, the RSA based key exchange methods in crypto/tls may exhibit a timing side channel"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2023-45287",
    "datePublished": "2023-12-05T16:18:06.104Z",
    "dateReserved": "2023-10-06T17:06:26.221Z",
    "dateUpdated": "2024-08-02T20:21:15.309Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-45287\",\"sourceIdentifier\":\"security@golang.org\",\"published\":\"2023-12-05T17:15:08.570\",\"lastModified\":\"2024-11-21T08:26:42.250\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Before Go 1.20, the RSA based TLS key exchanges used the math/big library, which is not constant time. RSA blinding was applied to prevent timing attacks, but analysis shows this may not have been fully effective. In particular it appears as if the removal of PKCS#1 padding may leak timing information, which in turn could be used to recover session key bits. In Go 1.20, the crypto/tls library switched to a fully constant time RSA implementation, which we do not believe exhibits any timing side channels.\"},{\"lang\":\"es\",\"value\":\"Antes de Go 1.20, los intercambios de claves TLS basados en RSA utilizaban la librer\u00eda math/big, que no es un tiempo constante. Se aplic\u00f3 blinding RSA para prevenir ataques sincronizados, pero el an\u00e1lisis muestra que esto puede no haber sido completamente efectivo. En particular, parece que la eliminaci\u00f3n del relleno PKCS#1 puede filtrar informaci\u00f3n de tiempo, que a su vez podr\u00eda usarse para recuperar bits de clave de sesi\u00f3n. En Go 1.20, la librer\u00eda crypto/tls cambi\u00f3 a una implementaci\u00f3n RSA de tiempo completamente constante, que no creemos que muestre ning\u00fan canal lateral de temporizaci\u00f3n.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-203\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.20.0\",\"matchCriteriaId\":\"A96BDB4B-F1DA-4948-8E56-8B4933BB8BC2\"}]}]}],\"references\":[{\"url\":\"https://go.dev/cl/326012/26\",\"source\":\"security@golang.org\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://go.dev/issue/20654\",\"source\":\"security@golang.org\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://groups.google.com/g/golang-announce/c/QMK8IQALDvA\",\"source\":\"security@golang.org\",\"tags\":[\"Mailing List\",\"Release Notes\"]},{\"url\":\"https://people.redhat.com/~hkario/marvin/\",\"source\":\"security@golang.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://pkg.go.dev/vuln/GO-2023-2375\",\"source\":\"security@golang.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20240112-0005/\",\"source\":\"security@golang.org\"},{\"url\":\"https://go.dev/cl/326012/26\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://go.dev/issue/20654\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://groups.google.com/g/golang-announce/c/QMK8IQALDvA\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Release Notes\"]},{\"url\":\"https://people.redhat.com/~hkario/marvin/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://pkg.go.dev/vuln/GO-2023-2375\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20240112-0005/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.