Description
Timescale pgvectorscale before 0.9.1 contains a type confusion vulnerability that allows low-privileged database users to corrupt memory by shadowing pgvector's vector type or operators. Attackers with CREATE privilege on the vectorscale schema can pre-create shadow objects, then build and query DiskANN indexes over crafted values to cause out-of-bounds reads and writes, disclosing memory, crashing the server, or escalating privileges.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| timescale | pgvectorscale | < 0.9.1 | 0.9.1 |
References
- Pull Request #280 issue-tracking patch
- https://github.com/timescale/pgvectorscale/commit/1c7cb1cab919ac122f901f163a71f69a264a8f81 patch
- https://github.com/timescale/pgvectorscale/commit/59d2f573dbd7a1446728ac547576d22f5b05cfaa patch
- https://github.com/timescale/pgvectorscale/commit/f42f8cf29c92111add863ccf3255b3bf23fb51cd patch
- https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/mod.rs#L208-L231 technical-description
- https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/pg_vector.rs#L133-L151 technical-description
- https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/build.rs#L253 technical-description
- pgvectorscale 0.9.1 Release Notes release-notes
- https://github.com/timescale/pgvectorscale product
- VulnCheck Advisory: Timescale pgvectorscale before 0.9.1 Type Confusion via Unqualified DiskANN Operator Classes third-party-advisory