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Advisories

SQLite before 3.54.0 Stack Exhaustion via CTE Chain in selectExpander()

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Severity
medium
Date
Affecting

  • SQLite >= 0, < 3.54.0

CWE
  • CWE-674 Uncontrolled Recursion
CVSS
6.8
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Ke Han, Abraxas Labs, D. Richard Hipp
Description
SQLite before 3.54.0 contains a stack exhaustion vulnerability that allows attackers to bypass the SQLITE_LIMIT_EXPR_DEPTH nesting limit because common table expressions are not counted against it. Attackers can supply a WITH clause chaining tens of thousands of CTEs, via plain SQL or a view in an untrusted database file, causing unbounded selectExpander() recursion that crashes the process.

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