Hello gophers,

We have just released Go 1.15.7 and Go 1.14.14 to address recently reported
security issues. We recommend that all users update to one of these
releases (if you’re not sure which, choose Go 1.15.7).

   -

   cmd/go: packages using cgo can cause arbitrary code execution at build
   time


The go command may execute arbitrary code at build time when cgo is in use
on Windows. This may occur when running “go get”, or any other command that
builds code. Only users who build untrusted code (and don’t execute it) are
affected.

In addition to Windows users, this can also affect Unix users who have “.”
listed explicitly in their PATH and are running “go get” or build commands
outside of a module or with module mode disabled.

Thanks to RyotaK (https://twitter.com/ryotkak) for reporting this issue.

This issue is CVE-2021-3115 and Go issue golang.org/issue/43783.

For more background on the cmd/go change and help deciding whether your own
programs might have similar issues, see our blog post at
https://blog.golang.org/path-security.


   -

   crypto/elliptic: incorrect operations on the P-224 curve


The P224() Curve implementation can in rare circumstances generate
incorrect outputs, including returning invalid points from ScalarMult.

The crypto/x509 and golang.org/x/crypto/ocsp (but not crypto/tls) packages
support P-224 ECDSA keys, but they are not supported by publicly trusted
certificate authorities. No other standard library or golang.org/x/crypto
package supports or uses the P-224 curve.

The incorrect output was found by the elliptic-curve-differential-fuzzer
<https://github.com/catenacyber/elliptic-curve-differential-fuzzer> project
running on OSS-Fuzz and reported by Philippe Antoine (Catena cyber).

This issue is CVE-2021-3114 and Go issue golang.org/issue/43786.



The upcoming Go 1.16rc1 release will also include the fixes above.

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

Thank you,

Roland on behalf of the Go team

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