Security advisory for SQLite

Advisory overview

SQLite before 3.54.0 built with FTS5 contains a heap buffer overflow in fts5DoSecureDelete() that allows attackers to write past the leaf page buffer via crafted footer key offsets. Attackers can supply a database file with a corrupted FTS5 index that, when deleted from with secure-delete enabled, corrupts heap memory and crashes the application.

Related references

• https://abraxaslabs.tech/research/sqlite-fts5-securedel
• https://github.com/sqlite/sqlite
• https://github.com/sqlite/sqlite/blob/version-3.53.4/ext/fts5/fts5_index.c#L5525
• https://github.com/sqlite/sqlite/commit/d9de6eedbe918c074c7556400fa21df5960704d9
• https://sqlite.org/releaselog/3_54_0.html
• https://sqlite.org/src/info/9cd4f9e920
• https://www.vulncheck.com/advisories/sqlite-before-3.54.0-heap-buffer-overflow-via-fts5-fts5dosecuredelete