mirror of
https://github.com/golang/go
synced 2024-09-15 22:20:06 +00:00
doc/go1.17: add security-related release notes
Change-Id: I573def0f48fe66a1bc60fff321ab007c76b47ef0 Reviewed-on: https://go-review.googlesource.com/c/go/+/327810 Reviewed-by: Katie Hockman <katie@golang.org> Trust: Katie Hockman <katie@golang.org> Trust: Filippo Valsorda <filippo@golang.org>
This commit is contained in:
Filippo Valsorda
parent
1de332996c
commit
85a2e24afd
124
doc/go1.17.html
124
doc/go1.17.html
|
|
@ -441,6 +441,67 @@ func Foo() bool {
|
|||
<a href="/pkg/runtime/cgo#Handle">runtime/cgo.Handle</a> for more information.
|
||||
</p>
|
||||
|
||||
<h3 id="semicolons">URL query parsing</h3>
|
||||
<!-- CL 325697, CL 326309 -->
|
||||
|
||||
<p>
|
||||
The <code>net/url</code> and <code>net/http</code> packages used to accept
|
||||
<code>";"</code> (semicolon) as a setting separator in URL queries, in
|
||||
addition to <code>"&"</code> (ampersand). Now, settings with non-percent-encoded
|
||||
semicolons are rejected and <code>net/http</code> servers will log a warning to
|
||||
<a href="/pkg/net/http#Server.ErrorLog"><code>Server.ErrorLog</code></a>
|
||||
when encountering one in a request URL.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
For example, before Go 1.17 the <a href="/pkg/net/url#URL.Query"><code>Query</code></a>
|
||||
method of the URL <code>example?a=1;b=2&c=3</code> would have returned
|
||||
<code>map[a:[1] b:[2] c:[3]]</code>, while now it returns <code>map[c:[3]]</code>.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
When encountering such a query string,
|
||||
<a href="/pkg/net/url#URL.Query"><code>URL.Query</code></a>
|
||||
and
|
||||
<a href="/pkg/net/http#Request.FormValue"><code>Request.FormValue</code></a>
|
||||
ignore any settings that contain a semicolon,
|
||||
<a href="/pkg/net/url#ParseQuery"><code>ParseQuery</code></a>
|
||||
returns the remaining settings and an error, and
|
||||
<a href="/pkg/net/http#Request.ParseForm"><code>Request.ParseForm</code></a>
|
||||
and
|
||||
<a href="/pkg/net/http#Request.ParseMultipartForm"><code>Request.ParseMultipartForm</code></a>
|
||||
return an error but still set <code>Request</code> fields based on the
|
||||
remaining settings.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
<code>net/http</code> users can restore the original behavior by using the new
|
||||
<a href="/pkg/net/http#AllowQuerySemicolons"><code>AllowQuerySemicolons</code></a>
|
||||
handler wrapper. This will also suppress the <code>ErrorLog</code> warning.
|
||||
Note that accepting semicolons as query separators can lead to security issues
|
||||
if different systems interpret cache keys differently.
|
||||
See <a href="https://golang.org/issue/25192">issue 25192</a> for more information.
|
||||
</p>
|
||||
|
||||
<h3 id="ALPN">TLS strict ALPN</h3>
|
||||
<!-- CL 289209, CL 325432 -->
|
||||
|
||||
<p>
|
||||
When <a href="/pkg/crypto/tls#Config.NextProtos"><code>Config.NextProtos</code></a>
|
||||
is set, servers now enforce that there is an overlap between the configured
|
||||
protocols and the ALPN protocols advertised by the client, if any. If there is
|
||||
no mutually supported protocol, the connection is closed with the
|
||||
<code>no_application_protocol</code> alert, as required by RFC 7301. This
|
||||
helps mitigate <a href="https://alpaca-attack.com/">the ALPACA cross-protocol attack</a>.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
As an exception, when the value <code>"h2"</code> is included in the server's
|
||||
<code>Config.NextProtos</code>, HTTP/1.1 clients will be allowed to connect as
|
||||
if they didn't support ALPN.
|
||||
See <a href="https://golang.org/issue/46310">issue 46310</a> for more information.
|
||||
</p>
|
||||
|
||||
<h3 id="minor_library_changes">Minor changes to the library</h3>
|
||||
|
||||
<p>
|
||||
|
|
@ -549,14 +610,6 @@ func Foo() bool {
|
|||
methods. Canceling the context after the handshake has finished has no effect.
|
||||
</p>
|
||||
|
||||
<p><!-- CL 289209 -->
|
||||
When <a href="/pkg/crypto/tls#Config.NextProtos"><code>Config.NextProtos</code></a>
|
||||
is set, servers now enforce that there is an overlap between the
|
||||
configured protocols and the protocols advertised by the client, if any.
|
||||
If there is no overlap the connection is closed with the
|
||||
<code>no_application_protocol</code> alert, as required by RFC 7301.
|
||||
</p>
|
||||
|
||||
<p><!-- CL 314609 -->
|
||||
Cipher suite ordering is now handled entirely by the
|
||||
<code>crypto/tls</code> package. Currently, cipher suites are sorted based
|
||||
|
|
@ -658,6 +711,22 @@ func Foo() bool {
|
|||
</dd>
|
||||
</dl><!-- encoding/csv -->
|
||||
|
||||
<dl id="encoding/xml"><dt><a href="/pkg/encoding/xml/">encoding/xml</a></dt>
|
||||
<dd>
|
||||
<p><!-- CL 277893 -->
|
||||
When a comment appears within a
|
||||
<a href="/pkg/encoding/xml/#Directive"><code>Directive</code></a>, it is now replaced
|
||||
with a single space instead of being completely elided.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
Invalid element or attribute names with leading, trailing, or multiple
|
||||
colons are now stored unmodified into the
|
||||
<a href="/pkg/encoding/xml/#Name"><code>Name.Local</code></a> field.
|
||||
</p>
|
||||
</dd>
|
||||
</dl><!-- encoding/xml -->
|
||||
|
||||
<dl id="flag"><dt><a href="/pkg/flag/">flag</a></dt>
|
||||
<dd>
|
||||
<p><!-- CL 271788 -->
|
||||
|
|
@ -744,6 +813,20 @@ func Foo() bool {
|
|||
</dd>
|
||||
</dl><!-- mime -->
|
||||
|
||||
<dl id="mime/multipart"><dt><a href="/pkg/mime/multipart/">mime/multipart</a></dt>
|
||||
<dd>
|
||||
<p><!-- CL 313809 -->
|
||||
<a href="/pkg/mime/multipart/#Part.FileName"><code>Part.FileName</code></a>
|
||||
now applies
|
||||
<a href="/pkg/path/filepath/#Base"><code>filepath.Base</code></a> to the
|
||||
return value. This mitigates potential path traversal vulnerabilities in
|
||||
applications that accept multipart messages, such as <code>net/http</code>
|
||||
servers that call
|
||||
<a href="/pkg/net/http/#Request.FormFile"><code>Request.FormFile</code></a>.
|
||||
</p>
|
||||
</dd>
|
||||
</dl><!-- mime/multipart -->
|
||||
|
||||
<dl id="net"><dt><a href="/pkg/net/">net</a></dt>
|
||||
<dd>
|
||||
<p><!-- CL 272668 -->
|
||||
|
|
@ -763,7 +846,7 @@ func Foo() bool {
|
|||
the <a href="/pkg/net/#Error"><code>net.Error</code></a> interface.
|
||||
</p>
|
||||
|
||||
<p><!-- CL325829 -->
|
||||
<p><!-- CL 325829 -->
|
||||
The <a href="/pkg/net/#ParseIP"><code>ParseIP</code></a> and <a href="/pkg/net/#ParseCIDR"><code>ParseCIDR</code></a>
|
||||
functions now reject IPv4 addresses which contain decimal components with leading zeros.
|
||||
|
||||
|
|
@ -794,6 +877,29 @@ func Foo() bool {
|
|||
The <a href="/pkg/net/http/#ReadRequest"><code>ReadRequest</code></a> function
|
||||
now returns an error when the request has multiple Host headers.
|
||||
</p>
|
||||
|
||||
<p><!-- CL 313950 -->
|
||||
When producing a redirect to the cleaned version of a URL,
|
||||
<a href="/pkg/net/http/#ServeMux"><code>ServeMux</code></a> now always
|
||||
uses relative URLs in the <code>Location</code> header. Previously it
|
||||
would echo the full URL of the request, which could lead to unintended
|
||||
redirects if the client could be made to send an absolute request URL.
|
||||
</p>
|
||||
|
||||
<p><!-- CL 308009, CL 313489 -->
|
||||
When interpreting certain HTTP headers handled by <code>net/http</code>,
|
||||
non-ASCII characters are now ignored or rejected.
|
||||
</p>
|
||||
|
||||
<p><!-- CL 325697 -->
|
||||
If
|
||||
<a href="/pkg/net/http/#Request.ParseForm"><code>Request.ParseForm</code></a>
|
||||
returns an error when called by
|
||||
<a href="/pkg/net/http/#Request.ParseMultipartForm"><code>Request.ParseMultipartForm</code></a>,
|
||||
the latter now continues populating
|
||||
<a href="/pkg/net/http/#Request.MultipartForm"><code>Request.MultipartForm</code></a>
|
||||
before returning it.
|
||||
</p>
|
||||
</dd>
|
||||
</dl><!-- net/http -->
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue