vulnerability
FreeBSD: VID-065890C3-725E-11E9-B0E1-6CC21735F730 (CVE-2019-10130): PostgreSQL -- Selectivity estimators bypass row security policies
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:L/Au:S/C:P/I:N/A:N) | May 9, 2019 | May 11, 2019 | Aug 8, 2019 |
Description
Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.
From VID-065890C3-725E-11E9-B0E1-6CC21735F730:
The PostgreSQL project reports:
PostgreSQL maintains statistics for tables by sampling
data available in columns; this data is consulted during
the query planning process. Prior to this release, a user
able to execute SQL queries with permissions to read a
given column could craft a leaky operator that could
read whatever data had been sampled from that column.
If this happened to include values from rows that the user
is forbidden to see by a row security policy, the user
could effectively bypass the policy. This is fixed by only
allowing a non-leakproof operator to use this data if
there are no relevant row security policies for the table.
Solution(s)
References
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