[security] Go 1.11.5 and Go 1.10.8 are released

[Julie Qiu]

Hi gophers,

We have just released Go 1.11.5 and Go 1.10.8 to address a recently reported security issue. We recommend that all users update to one of these releases (if you’re not sure which, choose Go 1.11.5).

This DoS vulnerability in the crypto/elliptic implementations of the P-521 and P-384 elliptic curves may let an attacker craft inputs that consume excessive amounts of CPU.

These inputs might be delivered via TLS handshakes, X.509 certificates, JWT tokens, ECDH shares or ECDSA signatures. In some cases, if an ECDH private key is reused more than once, the attack can also lead to key recovery.

The issue is CVE-2019-6486 and Go issue golang.org/issue/29903. See the Go issue for more details.

Downloads are available at https://golang.org/dl for all supported platforms.

Cheers,

Julie (on behalf of the Go team)

[Julie Qiu]

Hello gophers,

Due to an issue with the release tooling (https://golang.org/issue/29906), go1.11.5.linux-amd64.tar.gz and go1.10.8.linux-amd64.tar.gz include two unnecessary directories in the root of the archive: "gocache" and "tmp".

They are harmless and safe to remove.

The following commands can be used to extract only the necessary “go” directory from the archives:

tar -C /usr/local -xzf go1.11.5.linux-amd64.tar.gz go
tar -C /usr/local -xzf go1.10.8.linux-amd64.tar.gz go

These commands will create a Go tree in /usr/local/go.

Sorry for the inconvenience,

Julie (on behalf of the Go team)