{"id":"GHSA-mc97-99j4-vm2v","summary":"Soft Serve Public Key Authentication Bypass Vulnerability when Keyboard-Interactive SSH Authentication is Enabled","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","aliases":["CVE-2023-43809","GO-2023-2097"],"modified":"2024-08-21T14:56:59.239485Z","published":"2023-10-02T23:30:39Z","related":["CVE-2023-43809"],"database_specific":{"cwe_ids":["CWE-287"],"nvd_published_at":"2023-10-04T21:15:10Z","severity":"HIGH","github_reviewed_at":"2023-10-02T23:30:39Z","github_reviewed":true},"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"}],"affected":[{"package":{"name":"github.com/charmbracelet/soft-serve","ecosystem":"Go","purl":"pkg:golang/github.com/charmbracelet/soft-serve"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.6.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/10/GHSA-mc97-99j4-vm2v/GHSA-mc97-99j4-vm2v.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}