3.1

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3.1

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CVE-2024-4317

CVE-2024-4317: Missing authorization in PostgreSQL built-in views pg_stats_ext and pg_stats_ext_exprs allows an...

Missing authorization in PostgreSQL built-in views pg_stats_ext and pg_stats_ext_exprs allows an unprivileged database user to read most common values and other statistics from CREATE STATISTICS commands of other users. The most common values may reveal column values the eavesdropper could not otherwise read or results of functions they cannot execute. Installing an unaffected version only fixes fresh PostgreSQL installations, namely those that are created with the initdb utility after installing that version. Current PostgreSQL installations will remain vulnerable until they follow the instructions in the release notes. Within major versions 14-16, minor versions before PostgreSQL 16.3, 15.7, and 14.12 are affected. Versions before PostgreSQL 14 are unaffected.

(GitHub Advisory)

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CVE-2024-4317

CVE-2024-4317:

3.1

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3.1

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Technical Details

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Root Cause Analysis

The vulnerability CVE-2024-4317 concerns missing authorization in the PostgreSQL built-in views pg_stats_ext and pg_stats_ext_exprs. These views allowed unprivileged users to access statistical data created by other users, potentially revealing sensitive information. The fix, as described in the PostgreSQL security advisory, involves applying a SQL script (fix-CVE-2024-4317.sql) that modifies the definitions of these views to enforce correct ownership and privilege checks. Although I could not directly fetch the commit diffs, the official advisories clearly name these two views as the locus of the vulnerability. Therefore, these views, in their pre-patched state, are the 'vulnerable functions' as they are the database objects that, when queried, would lead to the information disclosure.

Vulnerable functions

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WAF Rule

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Reasoning

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