GHSA-MC97-99J4-VM2V

Vulnerability from github – Published: 2023-10-02 23:30 – Updated: 2023-10-04 22:13
VLAI?
Summary
Soft Serve Public Key Authentication Bypass Vulnerability when Keyboard-Interactive SSH Authentication is Enabled
Details

Impact

A security vulnerability in Soft Serve could allow an unauthenticated, remote attacker to bypass public key authentication when keyboard-interactive SSH authentication is active, through the allow-keyless setting, and the public key requires additional client-side verification for example using FIDO2 or GPG. This is due to insufficient validation procedures of the public key step during SSH request handshake, granting unauthorized access if the keyboard-interaction mode is utilized. An attacker could exploit this vulnerability by presenting manipulated SSH requests using keyboard-interactive authentication mode. This could potentially result in unauthorized access to the Soft Serve.

Patches

Users should upgrade to the latest Soft Serve version v0.6.2 to receive the patch for this issue.

Workarounds

To workaround this vulnerability without upgrading, users can temporarily disable Keyboard-Interactive SSH Authentication using the allow-keyless setting.

References

https://github.com/charmbracelet/soft-serve/issues/389

Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/charmbracelet/soft-serve"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-43809"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-10-02T23:30:39Z",
    "nvd_published_at": "2023-10-04T21:15:10Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nA security vulnerability in Soft Serve could allow an unauthenticated, remote attacker to bypass public key authentication when keyboard-interactive SSH authentication is active, through the `allow-keyless` setting, and the public key requires additional client-side verification for example using FIDO2 or GPG. This is due to insufficient validation procedures of the public key step during SSH request handshake, granting unauthorized access if the keyboard-interaction mode is utilized. An attacker could exploit this vulnerability by presenting manipulated SSH requests using keyboard-interactive authentication mode. This could potentially result in unauthorized access to the Soft Serve.\n\n### Patches\n\nUsers should upgrade to the latest Soft Serve version `v0.6.2` to receive the patch for this issue. \n\n### Workarounds\n\nTo workaround this vulnerability without upgrading, users can _temporarily_ disable Keyboard-Interactive SSH Authentication using the `allow-keyless` setting.\n\n### References\n\nhttps://github.com/charmbracelet/soft-serve/issues/389",
  "id": "GHSA-mc97-99j4-vm2v",
  "modified": "2023-10-04T22:13:08Z",
  "published": "2023-10-02T23:30:39Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-mc97-99j4-vm2v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43809"
    },
    {
      "type": "WEB",
      "url": "https://github.com/charmbracelet/soft-serve/issues/389"
    },
    {
      "type": "WEB",
      "url": "https://github.com/charmbracelet/soft-serve/commit/407c4ec72d1006cee1ff8c1775e5bcc091c2bc89"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/charmbracelet/soft-serve"
    },
    {
      "type": "WEB",
      "url": "https://github.com/charmbracelet/soft-serve/releases/tag/v0.6.2"
    }
  ],
  "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"
    }
  ],
  "summary": "Soft Serve Public Key Authentication Bypass Vulnerability when Keyboard-Interactive SSH Authentication is Enabled"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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