2350afd2e8
Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. Limit this by restricting the size of RSA keys transmitted during handshakes to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable. Thanks to Mateusz Poliwczak for reporting this issue. Fixes #61460 Fixes CVE-2023-29409 Change-Id: Ie35038515a649199a36a12fc2c5df3af855dca6c Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1912161 Reviewed-by: Damien Neil <dneil@google.com> Reviewed-by: Tatiana Bradley <tatianabradley@google.com> Run-TryBot: Roland Shoemaker <bracewell@google.com> Reviewed-on: https://go-review.googlesource.com/c/go/+/515257 TryBot-Result: Gopher Robot <gobot@golang.org> Auto-Submit: David Chase <drchase@google.com> Run-TryBot: David Chase <drchase@google.com> |
||
---|---|---|
.github | ||
api | ||
doc | ||
lib/time | ||
misc | ||
src | ||
test | ||
.gitattributes | ||
.gitignore | ||
codereview.cfg | ||
CONTRIBUTING.md | ||
go.env | ||
LICENSE | ||
PATENTS | ||
README.md | ||
SECURITY.md |
The Go Programming Language
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
Gopher image by Renee French, licensed under Creative Commons 4.0 Attributions license.
Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.
Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.
Download and Install
Binary Distributions
Official binary distributions are available at https://go.dev/dl/.
After downloading a binary release, visit https://go.dev/doc/install for installation instructions.
Install From Source
If a binary distribution is not available for your combination of operating system and architecture, visit https://go.dev/doc/install/source for source installation instructions.
Contributing
Go is the work of thousands of contributors. We appreciate your help!
To contribute, please read the contribution guidelines at https://go.dev/doc/contribute.
Note that the Go project uses the issue tracker for bug reports and proposals only. See https://go.dev/wiki/Questions for a list of places to ask questions about the Go language.