GHSA-3VM4-22FP-5RFM

Vulnerability from github – Published: 2022-05-24 22:01 – Updated: 2023-07-12 20:45
VLAI
Summary
golang.org/x/crypto/ssh NULL Pointer Dereference vulnerability
Details

A nil pointer dereference in the golang.org/x/crypto/ssh component through v0.0.0-20201203163018-be400aefbc4c for Go allows remote attackers to cause a denial of service against SSH servers. An attacker can craft an authentication request message for the gssapi-with-mic method which will cause NewServerConn to panic via a nil pointer dereference if ServerConfig.GSSAPIWithMICConfig is nil.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "golang.org/x/crypto"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20201216223049-8b5274cf687f"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-29652"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-02-08T00:29:05Z",
    "nvd_published_at": "2020-12-17T05:15:00Z",
    "severity": "HIGH"
  },
  "details": "A nil pointer dereference in the golang.org/x/crypto/ssh component through v0.0.0-20201203163018-be400aefbc4c for Go allows remote attackers to cause a denial of service against SSH servers. An attacker can craft an authentication request message for the `gssapi-with-mic` method which will cause NewServerConn to panic via a nil pointer dereference if ServerConfig.GSSAPIWithMICConfig is nil.",
  "id": "GHSA-3vm4-22fp-5rfm",
  "modified": "2023-07-12T20:45:53Z",
  "published": "2022-05-24T22:01:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-29652"
    },
    {
      "type": "WEB",
      "url": "https://go-review.googlesource.com/c/crypto/+/278852"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/cl/278852"
    },
    {
      "type": "WEB",
      "url": "https://go.googlesource.com/crypto/+/8b5274cf687fd9316b4108863654cc57385531e8"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/ouZIlBimOsE?pli=1"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r68032132c0399c29d6cdc7bd44918535da54060a10a12b1591328bff@%3Cnotifications.skywalking.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2021-0227"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "golang.org/x/crypto/ssh NULL Pointer Dereference vulnerability"
}



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