supported versions of our database system, including 11.3, 10.8, 9.6.13,
9.5.17, and 9.4.22. This release fixes two security issues in the
PostgreSQL server, a security issue found in two of the PostgreSQL
Windows installers, and over 60 bugs reported over the last three months.
Security: CVE-2019-10129: Memory disclosure in partition routing
Prior to this release, a user running PostgreSQL 11 can read arbitrary
bytes of server memory by executing a purpose-crafted INSERT statement
to a partitioned table.
Security: CVE-2019-10130: Selectivity estimators bypass row security policies
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.
This issue is present in PostgreSQL 9.5, 9.6, 10, and 11. The PostgreSQL
project thanks Dean Rasheed for reporting this problem.
Also fix a FreeBSD port problem with LLVM [1] and add promote command
to `service postgresql` [2]
PR: 236100, 234879
Submitted by: tomonori.usaka@ubin.jp [1], Trix Farrar [2]
0e8e77e466