<para>
However, note that installations using physical replication should
update standby servers before the primary server, as explained in
- the first changelog entry below.
+ the third changelog entry below.
</para>
<para>
<listitem>
<!--
+Author: Tom Lane <tgl@sss.pgh.pa.us>
+Branch: master [28e241255] 2021-11-08 11:01:43 -0500
+Branch: REL_14_STABLE [9d5a76b8d] 2021-11-08 11:01:43 -0500
+Branch: REL_13_STABLE [e92ed93e8] 2021-11-08 11:01:43 -0500
+Branch: REL_12_STABLE [d1bd26740] 2021-11-08 11:01:43 -0500
+Branch: REL_11_STABLE [9394fb828] 2021-11-08 11:01:43 -0500
+Branch: REL_10_STABLE [9ae0f1112] 2021-11-08 11:01:43 -0500
+Branch: REL9_6_STABLE [046c2c846] 2021-11-08 11:01:43 -0500
+-->
+ <para>
+ Make the server reject extraneous data after an SSL or GSS
+ encryption handshake (Tom Lane)
+ </para>
+
+ <para>
+ A man-in-the-middle with the ability to inject data into the TCP
+ connection could stuff some cleartext data into the start of a
+ supposedly encryption-protected database session.
+ This could be abused to send faked SQL commands to the server,
+ although that would only work if the server did not demand any
+ authentication data. (However, a server relying on SSL certificate
+ authentication might well not do so.)
+ </para>
+
+ <para>
+ The <productname>PostgreSQL</productname> Project thanks
+ Jacob Champion for reporting this problem.
+ (CVE-2021-23214)
+ </para>
+ </listitem>
+
+ <listitem>
+<!--
+Author: Tom Lane <tgl@sss.pgh.pa.us>
+Branch: master [160c02588] 2021-11-08 11:14:56 -0500
+Branch: REL_14_STABLE [30547d791] 2021-11-08 11:14:56 -0500
+Branch: REL_13_STABLE [844b31692] 2021-11-08 11:14:56 -0500
+Branch: REL_12_STABLE [36bb95ef2] 2021-11-08 11:14:56 -0500
+Branch: REL_11_STABLE [a021a1d2a] 2021-11-08 11:14:56 -0500
+Branch: REL_10_STABLE [e65d9c8cd] 2021-11-08 11:14:56 -0500
+Branch: REL9_6_STABLE [d83cdfdca] 2021-11-08 11:14:57 -0500
+-->
+ <para>
+ Make <application>libpq</application> reject extraneous data after
+ an SSL or GSS encryption handshake (Tom Lane)
+ </para>
+
+ <para>
+ A man-in-the-middle with the ability to inject data into the TCP
+ connection could stuff some cleartext data into the start of a
+ supposedly encryption-protected database session.
+ This could probably be abused to inject faked responses to the
+ client's first few queries, although other details of libpq's
+ behavior make that harder than it sounds. A different line of
+ attack is to exfiltrate the client's password, or other sensitive
+ data that might be sent early in the session. That has been shown
+ to be possible with a server vulnerable to CVE-2021-23214.
+ </para>
+
+ <para>
+ The <productname>PostgreSQL</productname> Project thanks
+ Jacob Champion for reporting this problem.
+ (CVE-2021-23222)
+ </para>
+ </listitem>
+
+ <listitem>
+<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [ff9f111bc] 2021-09-29 11:21:51 -0300
Branch: REL_14_STABLE [64a8687a6] 2021-09-29 11:41:01 -0300