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Advisories

Timescale pgvectorscale before 0.9.1 Type Confusion via Unqualified DiskANN Operator Classes

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Severity
high
Date
Affecting

  • pgvectorscale >= 0, < 0.9.1

CWE
  • CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')
CVSS
7.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Mehmet Ince
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.

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