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Debian LTS Advisory ([SECURITY] [DLA-1874-1] postgresql-9.4 security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'postgresql-9.4' package(s) announced via the DSA-1874-1 advisory.
Insight
Insight
* CVE-2019-10208: `TYPE` in `pg_temp` executes arbitrary SQL during `SECURITY DEFINER` execution Versions Affected: 9.4 - 11 Given a suitable `SECURITY DEFINER` function, an attacker can execute arbitrary SQL under the identity of the function owner. An attack requires `EXECUTE` permission on the function, which must itself contain a function call having inexact argument type match. For example, `length('foo'::varchar)` and `length('foo')` are inexact, while `length('foo'::text)` is exact. As part of exploiting this vulnerability, the attacker uses `CREATE DOMAIN` to create a type in a `pg_temp` schema. The attack pattern and fix are similar to that for CVE-2007-2138. Writing `SECURITY DEFINER` functions continues to require following the considerations noted in the documentation: The PostgreSQL project thanks Tom Lane for reporting this problem.
Affected Software
Affected Software
'postgresql-9.4' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For Debian 8 'Jessie', this problem has been fixed in version 9.4.24-0+deb8u1. We recommend that you upgrade your postgresql-9.4 packages.