go1.20.10 (released 2023-10-10) includes a security fix to the net/http package.
See the Go 1.20.10 milestone on our issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.20.10+label%3ACherryPickApproved
full diff: https://github.com/golang/go/compare/go1.20.9...go1.20.10
From the security mailing:
[security] Go 1.21.3 and Go 1.20.10 are released
Hello gophers,
We have just released Go versions 1.21.3 and 1.20.10, minor point releases.
These minor releases include 1 security fixes following the security policy:
- net/http: rapid stream resets can cause excessive work
A malicious HTTP/2 client which rapidly creates requests and
immediately resets them can cause excessive server resource consumption.
While the total number of requests is bounded to the
http2.Server.MaxConcurrentStreams setting, resetting an in-progress
request allows the attacker to create a new request while the existing
one is still executing.
HTTP/2 servers now bound the number of simultaneously executing
handler goroutines to the stream concurrency limit. New requests
arriving when at the limit (which can only happen after the client
has reset an existing, in-flight request) will be queued until a
handler exits. If the request queue grows too large, the server
will terminate the connection.
This issue is also fixed in golang.org/x/net/http2 v0.17.0,
for users manually configuring HTTP/2.
The default stream concurrency limit is 250 streams (requests)
per HTTP/2 connection. This value may be adjusted using the
golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams
setting and the ConfigureServer function.
This is CVE-2023-39325 and Go issue https://go.dev/issue/63417.
This is also tracked by CVE-2023-44487.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
go1.20.9 (released 2023-10-05) includes one security fixes to the cmd/go package,
as well as bug fixes to the go command and the linker. See the Go 1.20.9
milestone on our issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.20.9+label%3ACherryPickApproved
full diff: https://github.com/golang/go/compare/go1.20.8...go1.20.9
From the security mailing:
[security] Go 1.21.2 and Go 1.20.9 are released
Hello gophers,
We have just released Go versions 1.21.2 and 1.20.9, minor point releases.
These minor releases include 1 security fixes following the security policy:
- cmd/go: line directives allows arbitrary execution during build
"//line" directives can be used to bypass the restrictions on "//go:cgo_"
directives, allowing blocked linker and compiler flags to be passed during
compliation. This can result in unexpected execution of arbitrary code when
running "go build". The line directive requires the absolute path of the file in
which the directive lives, which makes exploting this issue significantly more
complex.
This is CVE-2023-39323 and Go issue https://go.dev/issue/63211.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
go1.20.8 (released 2023-09-06) includes two security fixes to the html/template
package, as well as bug fixes to the compiler, the go command, the runtime,
and the crypto/tls, go/types, net/http, and path/filepath packages. See the
Go 1.20.8 milestone on our issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.20.8+label%3ACherryPickApproved
full diff: https://github.com/golang/go/compare/go1.20.7...go1.20.8
From the security mailing:
[security] Go 1.21.1 and Go 1.20.8 are released
Hello gophers,
We have just released Go versions 1.21.1 and 1.20.8, minor point releases.
These minor releases include 4 security fixes following the security policy:
- cmd/go: go.mod toolchain directive allows arbitrary execution
The go.mod toolchain directive, introduced in Go 1.21, could be leveraged to
execute scripts and binaries relative to the root of the module when the "go"
command was executed within the module. This applies to modules downloaded using
the "go" command from the module proxy, as well as modules downloaded directly
using VCS software.
Thanks to Juho Nurminen of Mattermost for reporting this issue.
This is CVE-2023-39320 and Go issue https://go.dev/issue/62198.
- html/template: improper handling of HTML-like comments within script contexts
The html/template package did not properly handle HMTL-like "<!--" and "-->"
comment tokens, nor hashbang "#!" comment tokens, in <script> contexts. This may
cause the template parser to improperly interpret the contents of <script>
contexts, causing actions to be improperly escaped. This could be leveraged to
perform an XSS attack.
Thanks to Takeshi Kaneko (GMO Cybersecurity by Ierae, Inc.) for reporting this
issue.
This is CVE-2023-39318 and Go issue https://go.dev/issue/62196.
- html/template: improper handling of special tags within script contexts
The html/template package did not apply the proper rules for handling occurrences
of "<script", "<!--", and "</script" within JS literals in <script> contexts.
This may cause the template parser to improperly consider script contexts to be
terminated early, causing actions to be improperly escaped. This could be
leveraged to perform an XSS attack.
Thanks to Takeshi Kaneko (GMO Cybersecurity by Ierae, Inc.) for reporting this
issue.
This is CVE-2023-39319 and Go issue https://go.dev/issue/62197.
- crypto/tls: panic when processing post-handshake message on QUIC connections
Processing an incomplete post-handshake message for a QUIC connection caused a panic.
Thanks to Marten Seemann for reporting this issue.
This is CVE-2023-39321 and CVE-2023-39322 and Go issue https://go.dev/issue/62266.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 4b00be585c)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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