CVE-2023-43809
highPriorität · verfolgen · 30EPSS 0.012 · 68. PerzentilEURUUSEPSS · bewertet 2026-10-27
Soft Serve is a self-hostable Git server for the command line. Prior to version 0.6.2, 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. Users should upgrade to the latest Soft Serve version `v0.6.2` to receive the patch for this issue. To workaround this vulnerability without upgrading, users can temporarily disable Keyboard-Interactive SSH Authentication using the `allow-keyless` setting.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.9–7.5
SSVC
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betroffene Produkte (4)
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Advisories (2)
Hersteller- und Ökosystem-Meldungen dazu.
- GHSA-mc97-99j4-vm2vSoft Serve Public Key Authentication Bypass Vulnerability when Keyboard-Interactive SSH Authentication is Enabled2023-10-02ghsa · osvUS
### 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
- GO-2023-2097Soft Serve Public Key Authentication Bypass Vulnerability when Keyboard-Interactive SSH Authentication is Enabled in github.com/charmbracelet/soft-serve2024-08-21vendor · osvUS
Soft Serve Public Key Authentication Bypass Vulnerability when Keyboard-Interactive SSH Authentication is Enabled in github.com/charmbracelet/soft-serve
auch bekannt als (6)
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quellen
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Referenzen (13)
Externe Belege — Patches, Meldungen, Analysen.
- https://cxsecurity.com/cveshow/CVE-2023-43809/cnnvd
- https://github.com/charmbracelet/soft-serve/commit/407c4ec72d1006cee1ff8c1775e5bcc091c2bc89cnnvd
- https://github.com/charmbracelet/soft-serve/issues/389cnnvd
- https://github.com/charmbracelet/soft-serve/releases/tag/v0.6.2cnnvd
- https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-mc97-99j4-vm2vcnnvd
- https://github.com/charmbracelet/soft-serve/commit/407c4ec72d1006cee1ff8c1775e5bcc091c2bc89enisa_euvd
- https://github.com/charmbracelet/soft-serve/issues/389enisa_euvd
- https://github.com/charmbracelet/soft-serve/releases/tag/v0.6.2enisa_euvd
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