cve-2023-29409
Vulnerability from cvelistv5
Published
2023-08-02 19:47
Modified
2024-08-02 14:07
Severity
Summary
Large RSA keys can cause high CPU usage in crypto/tls
References
SourceURLTags
security@golang.orghttps://go.dev/cl/515257Patch
security@golang.orghttps://go.dev/issue/61460Issue Tracking, Patch, Vendor Advisory
security@golang.orghttps://groups.google.com/g/golang-announce/c/X0b6CsSAaYI/m/Efv5DbZ9AwAJMailing List, Vendor Advisory
security@golang.orghttps://pkg.go.dev/vuln/GO-2023-1987Patch, Vendor Advisory
security@golang.orghttps://security.gentoo.org/glsa/202311-09
security@golang.orghttps://security.netapp.com/advisory/ntap-20230831-0010/
Impacted products
VendorProduct
Go standard librarycrypto/tls
Show details on NVD website

To clipboard 

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            "url": "https://pkg.go.dev/vuln/GO-2023-1987"
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            "url": "https://security.netapp.com/advisory/ntap-20230831-0010/"
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            "url": "https://security.gentoo.org/glsa/202311-09"
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        ],
        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/tls",
          "product": "crypto/tls",
          "programRoutines": [
            {
              "name": "Conn.verifyServerCertificate"
            },
            {
              "name": "Conn.processCertsFromClient"
            },
            {
              "name": "Conn.Handshake"
            },
            {
              "name": "Conn.HandshakeContext"
            },
            {
              "name": "Conn.Read"
            },
            {
              "name": "Conn.Write"
            },
            {
              "name": "Dial"
            },
            {
              "name": "DialWithDialer"
            },
            {
              "name": "Dialer.Dial"
            },
            {
              "name": "Dialer.DialContext"
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          ],
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          "versions": [
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              "lessThan": "1.19.12",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
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            {
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              "status": "affected",
              "version": "1.20.0-0",
              "versionType": "semver"
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              "status": "affected",
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          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Mateusz Poliwczak"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to \u003c= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en"
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        "dateUpdated": "2023-08-02T19:47:23.829Z",
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        "shortName": "Go"
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        },
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          "url": "https://pkg.go.dev/vuln/GO-2023-1987"
        },
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        },
        {
          "url": "https://security.gentoo.org/glsa/202311-09"
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      ],
      "title": "Large RSA keys can cause high CPU usage in crypto/tls"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2023-29409",
    "datePublished": "2023-08-02T19:47:23.829Z",
    "dateReserved": "2023-04-05T19:36:35.043Z",
    "dateUpdated": "2024-08-02T14:07:46.160Z",
    "state": "PUBLISHED"
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