5.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2023-20897

CVE-2023-20897: Salt vulnerable to denial of service

Salt masters prior to 3005.2 or 3006.2 contain a DOS in minion return. After receiving several bad packets on the request server equal to the number of worker threads, the master will become unresponsive to return requests until restarted.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2023-20897

CVE-2023-20897:

5.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
salt	pip	< 3005.2	3005.2
salt	pip	>= 3006.0rc1, < 3006.2	3006.2

Technical Details

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Root Cause Analysis

The vulnerability stems from improper error handling in the request server's message processing. The security advisory explicitly mentions the fix involves 'properly handling errors in decoded messages in request server.' This indicates the message handling logic (likely in handle_message method of RequestServer) didn't adequately manage exceptions during decoding, leading to worker thread exhaustion. The CWE-404 (resource release) aligns with thread management failures during error conditions. While exact code isn't available, the architectural role of RequestServer in processing minion returns and the described vulnerability mechanism strongly implicate this component.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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