CyberRota Analysis
AI-GeneratedThe vulnerability in ash_sql allows unauthorized access to aggregate values from another tenant's data in a schema-based multitenant application due to improper handling of query prefixes. This could lead to data leakage, where one tenant can inadvertently access sensitive information from another tenant's rows. Organizations using ash_sql versions from 0.1.0 to before 0.7.1 should prioritize addressing this issue to protect tenant data integrity and confidentiality.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Incorrect Authorization vulnerability in ash-project ash_sql allows a caller in a schema-based multitenant application to receive aggregate values computed from another tenant's rows. When an aggregate is computed over a distinct query, AshSql.AggregateQuery.add_single_aggs/5 rebuilds the outer query from query.from.source alone, which is only the {table, schema} tuple and does not carry query.prefix or query.from.prefix. For strategy(:context) multitenancy those hold the tenant schema, so the rebuilt outer query reads the repo's default schema while the inner correlated subquery still reads the tenant schema, and the two are joined only on primary key. The aggregate, and any relationship join added off the prefix-less binding, is then computed against the wrong tenant's rows. The neighbouring limit and exists branches instead wrap the query with subquery/1, which preserves the prefix. This issue affects ash_sql: from 0.1.0 before 0.7.1.