github - ghsa-mwx5-864v-x3jc

ghsa-mwx5-864v-x3jc

Vulnerability from github

Published

2022-10-13 12:00

Modified

2022-10-15 12:01

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

An issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-side SSH code, it is possible for an SSH server to change the login process in its favor. This attack can bypass additional security measures such as FIDO2 tokens or SSH-Askpass. Thus, it allows an attacker to abuse a forwarded agent for logging on to another server unnoticed.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-36369"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-10-12T21:15:00Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-side SSH code, it is possible for an SSH server to change the login process in its favor. This attack can bypass additional security measures such as FIDO2 tokens or SSH-Askpass. Thus, it allows an attacker to abuse a forwarded agent for logging on to another server unnoticed.",
  "id": "GHSA-mwx5-864v-x3jc",
  "modified": "2022-10-15T12:01:07Z",
  "published": "2022-10-13T12:00:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36369"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mkj/dropbear/pull/128"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mkj/dropbear/releases"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mkj/dropbear/releases/tag/DROPBEAR_2022.82"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00015.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

cve-2021-36369

Vulnerability from cvelistv5

Published

2022-10-12 00:00

Modified

2024-08-04 00:54

Severity ?

Summary

References

▼	URL	Tags
	https://github.com/mkj/dropbear/pull/128
	https://github.com/mkj/dropbear/releases
	https://github.com/mkj/dropbear/releases/tag/DROPBEAR_2022.82
	https://lists.debian.org/debian-lts-announce/2022/11/msg00015.html	mailing-list

Impacted products

Vendor

Product

Version

▼

n/a

Version: n/a

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:54:51.421Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/mkj/dropbear/pull/128"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/mkj/dropbear/releases"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/mkj/dropbear/releases/tag/DROPBEAR_2022.82"
          },
          {
            "name": "[debian-lts-announce] 20221113 [SECURITY] [DLA 3187-1] dropbear security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00015.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-side SSH code, it is possible for an SSH server to change the login process in its favor. This attack can bypass additional security measures such as FIDO2 tokens or SSH-Askpass. Thus, it allows an attacker to abuse a forwarded agent for logging on to another server unnoticed."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-11-14T00:00:00",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/mkj/dropbear/pull/128"
        },
        {
          "url": "https://github.com/mkj/dropbear/releases"
        },
        {
          "url": "https://github.com/mkj/dropbear/releases/tag/DROPBEAR_2022.82"
        },
        {
          "name": "[debian-lts-announce] 20221113 [SECURITY] [DLA 3187-1] dropbear security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00015.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-36369",
    "datePublished": "2022-10-12T00:00:00",
    "dateReserved": "2021-07-09T00:00:00",
    "dateUpdated": "2024-08-04T00:54:51.421Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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