This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login.
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Q1What is this vulnerability? (Essence + Consequences)
๐จ **Essence**: goshs < 2.0.0-beta.6 has an **Access Control Error**. ๐ **Consequences**: Attackers can bypass authentication entirely. No password needed to access the SFTP service! ๐
Q2Root Cause? (CWE/Flaw)
๐ก๏ธ **Root Cause**: **CWE-306** (Missing Authentication for Critical Function). ๐ **Flaw**: The server fails to enforce password checks when using the documented 'empty username' Basic Auth syntax. ๐ซ
Q3Who is affected? (Versions/Components)
๐ฅ **Affected**: **goshs** by Patrick Hener. ๐ฆ **Version**: All versions **before 2.0.0-beta.6**. โ **Fixed**: 2.0.0-beta.6 and later.
Q4What can hackers do? (Privileges/Data)
๐ต๏ธ **Hackers Can**: Gain **Full Access** without credentials. ๐ **Privileges**: Unauthenticated network access. ๐ **Data**: High risk of Confidentiality, Integrity, and Availability loss (CVSS H/H/H).
Q5Is exploitation threshold high? (Auth/Config)
โก **Threshold**: **LOW**. ๐ **Auth**: None required! ๐ **Config**: Exploits the specific 'empty username' syntax. If configured this way, it's an open door. ๐ช
Q6Is there a public Exp? (PoC/Wild Exploitation)
๐ฃ **Public Exp?**: **No PoC** listed in data. ๐ข **Status**: Advisory published (GHSA-c29w-qq4m-2gcv). โ ๏ธ **Risk**: Logic flaw is simple, likely easy to script manually.
Q7How to self-check? (Features/Scanning)
๐ **Self-Check**: Scan for goshs SFTP services. ๐งช **Test**: Try connecting with an **empty username** and any password (or no password). ๐ก **Indicator**: If it accepts, you are vulnerable!
Q8Is it fixed officially? (Patch/Mitigation)
๐ง **Official Fix**: **YES**. ๐ฅ **Action**: Upgrade to **goshs 2.0.0-beta.6** or newer. ๐ **Source**: GitHub Security Advisory (GHSA-c29w-qq4m-2gcv).
Q9What if no patch? (Workaround)
๐ง **No Patch?**: **Workaround**: Disable SFTP if not needed. ๐ **Config**: Avoid using the 'empty username' Basic Auth syntax. ๐งฑ **Block**: Restrict network access to the SFTP port.
Q10Is it urgent? (Priority Suggestion)
๐ฅ **Urgency**: **HIGH**. ๐จ **Priority**: Critical. CVSS is **High** (9.8+ implied by H/H/H). ๐ **Action**: Patch immediately or isolate the service. Do not ignore!