Skip to content

fix: use crypto/rand instead of math/rand for session certificate serial numbers #6417

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
ankur-anand wants to merge 1 commit into
base: main
Choose a base branch
from
Open

fix: use crypto/rand instead of math/rand for session certificate serial numbers #6417

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 7 additions & 2 deletions internal/session/session.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -6,10 +6,10 @@ package session
import (
"context"
"crypto/ed25519"
cyyptorand "crypto/rand"
"crypto/x509"
"io"
"math/big"
mathrand "math/rand"
"net"
"strings"
"time"
Expand Down Expand Up @@ -456,14 +456,19 @@ func newCert(ctx context.Context, jobId string, addresses []string, exp time.Tim
if err != nil {
return nil, nil, errors.Wrap(ctx, err, op)
}
serialNumber, err := cyyptorand.Int(rand, new(big.Int).Lsh(big.NewInt(1), 128))
if err != nil {
return nil, nil, errors.Wrap(ctx, err, op, errors.WithMsg("failed to generate certificate serial number"))
}

template := &x509.Certificate{
ExtKeyUsage: []x509.ExtKeyUsage{
x509.ExtKeyUsageServerAuth,
x509.ExtKeyUsageClientAuth,
},
DNSNames: []string{jobId},
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment | x509.KeyUsageKeyAgreement | x509.KeyUsageCertSign,
SerialNumber: big.NewInt(mathrand.Int63()),
SerialNumber: serialNumber,
NotBefore: time.Now().Add(-1 * time.Minute),
NotAfter: exp,
BasicConstraintsValid: true,
Expand Down