SQLite before 3.53.2 contains a heap-based buffer overflow vulnerability in the FTS5 full-text search extension that allows attackers to cause a crash or execute arbitrary code by supplying a crafted database with malicious continuation page metadata specifying a szLeaf value smaller than 4. Attackers can trigger an integer underflow in fts5ChunkIterate() causing an inflated remaining byte count during FTS5 MATCH query processing, leading to a heap buffer overflow of attacker-controlled data in applications compiled with SQLITE_ENABLE_FTS5.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Sqlite Sqlite
cpe:2.3:a:sqlite:sqlite:*:*:*:*:*:*:*:*
|
— |
3.53.2
|
References 4
https://sqlite.org/releaselog/3_53_2.html
disclosure@vulncheck.com
https://sqlite.org/src/info/061febcf41ca
disclosure@vulncheck.com
https://sqlite.org/src/info/4a5ad516ea93
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/sqlite-before-heap-buffer-overflow-via-fts…
disclosure@vulncheck.com