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 key exchange methods in crypto/tls may exhibit a timing side channel
References
SourceURLTags
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/
Impacted products
VendorProduct
Go standard librarycrypto/tls
Show details on NVD website

To clipboard 

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    "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"
            }
          ]
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      "descriptions": [
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          "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"
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      "providerMetadata": {
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        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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      "title": "Before Go 1.20, the RSA based key exchange methods in crypto/tls may exhibit a timing side channel"
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    "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"
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  }
}


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