Horizon Alert
Summary of the vulnerability and why it matters
This vulnerability in goshs allows an unauthenticated attacker to bypass SFTP authentication and access files without a password. The issue arises when the server is configured for SFTP with a specific basic authentication setting that fails to implement password handling, potentially exposing sensitive data.
- Allows unauthorized file access remotely.
- Affects SFTP services of goshs.
- Exposes sensitive information.
Attack Path
How an attacker could exploit the issue
An unauthenticated network attacker can exploit this flaw by connecting to the SFTP service on a vulnerable goshs server. If the server was misconfigured with the empty-username basic-auth syntax and SFTP enabled, the attacker can bypass authentication entirely and gain access to files.
- Network access needed.
- SFTP service and incorrect config.
- Server started with specific flags.
Live Threat
Current exploitation, exposure, and threat context
Attackers are likely to weaponize this CVE due to its direct impact on an SFTP service, allowing unauthenticated network access to files without a password. This type of vulnerability is attractive because it offers immediate access to sensitive data or a pathway into internal networks, bypassing standard authentication controls. The ease of exploitation combined with the critical nature of SFTP services makes it a prime target.
- Public exploit code is unavailable.
- No KEV listing.
- Fix released recently.
Operational Fix
Recommended remediation, mitigation, and detection steps
Prioritize immediate mitigation for the goshs SFTP authentication bypass, as unauthenticated attackers can access files. This critical vulnerability allows for remote code execution and data exfiltration.
- Update goshs to 2.0.0-beta.6.
- Block network access to SFTP ports.
- Monitor SFTP logs for unauthorized access.
