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Distrust compromised eMudhra intermediates in the Docker image #310

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Merged
chrapkowski-sg merged 1 commit into from
Oct 22, 2026
Merged

Distrust compromised eMudhra intermediates in the Docker image #310

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8 changes: 4 additions & 4 deletions flake.lock
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25 changes: 20 additions & 5 deletions flake.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
url = "github:numtide/flake-utils";
};
nixpkgs = {
url = "github:NixOS/nixpkgs/nixos-26.05";
url = "github:NixOS/nixpkgs/nixos-26.05-small";
};
};

Expand All @@ -19,10 +19,25 @@
let
pkgs = import nixpkgs { inherit system; };
version = pkgs.lib.fileContents ./internal/index/version.txt;
# Go 1.27.3 rejects chains through the compromised eMudhra
# intermediates (CVE-2026-111943). The default pkgs.go is an
# older 1.26 release without the fix.
go = pkgs.go_1_27;
# NSS 3.131.1 removes the emSign ECC Root CA - G3 root that
# the compromised eMudhra intermediates chain to. Until nixpkgs
# ships it, drop the root ourselves so git and other OpenSSL
# clients reject those chains too. (The bundle already excludes
# AAA Certificate Services, the root of the Sectigo cross-signs,
# from TLS trust.)
cacert =
if pkgs.lib.versionOlder pkgs.cacert.version "3.131.1" then
pkgs.cacert.override { blacklist = [ "emSign ECC Root CA - G3" ]; }
else
pkgs.cacert;
in
{
packages = {
scip-go = pkgs.buildGoModule {
scip-go = (pkgs.buildGoModule.override { inherit go; }) {
pname = "scip-go";
inherit version;
src = ./.;
Expand All @@ -44,9 +59,9 @@
tag = version;
contents = [
self.packages.${system}.scip-go
pkgs.go
go
pkgs.git
pkgs.dockerTools.caCertificates
(pkgs.dockerTools.override { inherit cacert; }).caCertificates
pkgs.dockerTools.usrBinEnv
pkgs.dockerTools.fakeNss
pkgs.busybox
Expand Down Expand Up @@ -103,7 +118,7 @@
devShells = {
default = pkgs.mkShellNoCC {
buildInputs = [
pkgs.go
go
pkgs.gotools
pkgs.nixfmt
];
Expand Down
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