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Prevent multiple To recipients (#22566) (#22569)

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Backport #22566

Change the mailer interface to prevent the leaking of possible hidden
email addresses when sending to multiple recipients.

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Co-authored-by: Gusted <williamzijl7@hotmail.com>
This commit is contained in:
Yarden Shoham 2023-01-22 19:37:26 +02:00 committed by GitHub
parent c320caed97
commit 6068978c42
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 23 additions and 20 deletions
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2
routers/private/mail.go
View file

@ -81,7 +81,7 @@ func SendEmail(ctx *context.PrivateContext) {
func sendEmail(ctx *context.PrivateContext, subject, message string, to []string) { func sendEmail(ctx *context.PrivateContext, subject, message string, to []string) {
for _, email := range to { for _, email := range to {
msg := mailer.NewMessage([]string{email}, subject, message) msg := mailer.NewMessage(email, subject, message)
mailer.SendAsync(msg) mailer.SendAsync(msg)
} }

12
services/mailer/mail.go
View file

@ -61,7 +61,7 @@ func SendTestMail(email string) error {
// No mail service configured // No mail service configured
return nil return nil
} }
return gomail.Send(Sender, NewMessage([]string{email}, "Gitea Test Email!", "Gitea Test Email!").ToMessage()) return gomail.Send(Sender, NewMessage(email, "Gitea Test Email!", "Gitea Test Email!").ToMessage())
} }
// sendUserMail sends a mail to the user // sendUserMail sends a mail to the user
@ -86,7 +86,7 @@ func sendUserMail(language string, u *user_model.User, tpl base.TplName, code, s
return return
} }
msg := NewMessage([]string{u.Email}, subject, content.String()) msg := NewMessage(u.Email, subject, content.String())
msg.Info = fmt.Sprintf("UID: %d, %s", u.ID, info) msg.Info = fmt.Sprintf("UID: %d, %s", u.ID, info)
SendAsync(msg) SendAsync(msg)
@ -137,7 +137,7 @@ func SendActivateEmailMail(u *user_model.User, email *user_model.EmailAddress) {
return return
} }
msg := NewMessage([]string{email.Email}, locale.Tr("mail.activate_email"), content.String()) msg := NewMessage(email.Email, locale.Tr("mail.activate_email"), content.String())
msg.Info = fmt.Sprintf("UID: %d, activate email", u.ID) msg.Info = fmt.Sprintf("UID: %d, activate email", u.ID)
SendAsync(msg) SendAsync(msg)
@ -168,7 +168,7 @@ func SendRegisterNotifyMail(u *user_model.User) {
return return
} }
msg := NewMessage([]string{u.Email}, locale.Tr("mail.register_notify"), content.String()) msg := NewMessage(u.Email, locale.Tr("mail.register_notify"), content.String())
msg.Info = fmt.Sprintf("UID: %d, registration notify", u.ID) msg.Info = fmt.Sprintf("UID: %d, registration notify", u.ID)
SendAsync(msg) SendAsync(msg)
@ -202,7 +202,7 @@ func SendCollaboratorMail(u, doer *user_model.User, repo *repo_model.Repository)
return return
} }
msg := NewMessage([]string{u.Email}, subject, content.String()) msg := NewMessage(u.Email, subject, content.String())
msg.Info = fmt.Sprintf("UID: %d, add collaborator", u.ID) msg.Info = fmt.Sprintf("UID: %d, add collaborator", u.ID)
SendAsync(msg) SendAsync(msg)
@ -306,7 +306,7 @@ func composeIssueCommentMessages(ctx *mailCommentContext, lang string, recipient
msgs := make([]*Message, 0, len(recipients)) msgs := make([]*Message, 0, len(recipients))
for _, recipient := range recipients { for _, recipient := range recipients {
msg := NewMessageFrom([]string{recipient.Email}, ctx.Doer.DisplayName(), setting.MailService.FromEmail, subject, mailBody.String()) msg := NewMessageFrom(recipient.Email, ctx.Doer.DisplayName(), setting.MailService.FromEmail, subject, mailBody.String())
msg.Info = fmt.Sprintf("Subject: %s, %s", subject, info) msg.Info = fmt.Sprintf("Subject: %s, %s", subject, info)
msg.SetHeader("Message-ID", "<"+msgID+">") msg.SetHeader("Message-ID", "<"+msgID+">")

2
services/mailer/mail_release.go
View file

@ -90,7 +90,7 @@ func mailNewRelease(ctx context.Context, lang string, tos []string, rel *repo_mo
publisherName := rel.Publisher.DisplayName() publisherName := rel.Publisher.DisplayName()
relURL := "<" + rel.HTMLURL() + ">" relURL := "<" + rel.HTMLURL() + ">"
for _, to := range tos { for _, to := range tos {
msg := NewMessageFrom([]string{to}, publisherName, setting.MailService.FromEmail, subject, mailBody.String()) msg := NewMessageFrom(to, publisherName, setting.MailService.FromEmail, subject, mailBody.String())
msg.Info = subject msg.Info = subject
msg.SetHeader("Message-ID", relURL) msg.SetHeader("Message-ID", relURL)
msgs = append(msgs, msg) msgs = append(msgs, msg)

5
services/mailer/mail_repo.go
View file

@ -83,9 +83,12 @@ func sendRepoTransferNotifyMailPerLang(lang string, newOwner, doer *user_model.U
return err return err
} }
msg := NewMessage(emails, subject, content.String()) for _, to := range emails {
msg := NewMessage(to, subject, content.String())
msg.Info = fmt.Sprintf("UID: %d, repository pending transfer notification", newOwner.ID) msg.Info = fmt.Sprintf("UID: %d, repository pending transfer notification", newOwner.ID)
SendAsync(msg) SendAsync(msg)
}
return nil return nil
} }

2
services/mailer/mail_team_invite.go
View file

@ -53,7 +53,7 @@ func MailTeamInvite(ctx context.Context, inviter *user_model.User, team *org_mod
return err return err
} }
msg := NewMessage([]string{invite.Email}, subject, mailBody.String()) msg := NewMessage(invite.Email, subject, mailBody.String())
msg.Info = subject msg.Info = subject
SendAsync(msg) SendAsync(msg)

10
services/mailer/mailer.go
View file

@ -36,7 +36,7 @@ type Message struct {
Info string // Message information for log purpose. Info string // Message information for log purpose.
FromAddress string FromAddress string
FromDisplayName string FromDisplayName string
To []string To string // Use only one recipient to prevent leaking of addresses
Subject string Subject string
Date time.Time Date time.Time
Body string Body string
@ -47,7 +47,7 @@ type Message struct {
func (m *Message) ToMessage() *gomail.Message { func (m *Message) ToMessage() *gomail.Message {
msg := gomail.NewMessage() msg := gomail.NewMessage()
msg.SetAddressHeader("From", m.FromAddress, m.FromDisplayName) msg.SetAddressHeader("From", m.FromAddress, m.FromDisplayName)
msg.SetHeader("To", m.To...) msg.SetHeader("To", m.To)
for header := range m.Headers { for header := range m.Headers {
msg.SetHeader(header, m.Headers[header]...) msg.SetHeader(header, m.Headers[header]...)
} }
@ -86,7 +86,7 @@ func (m *Message) generateAutoMessageID() string {
dateMs := m.Date.UnixNano() / 1e6 dateMs := m.Date.UnixNano() / 1e6
h := fnv.New64() h := fnv.New64()
if len(m.To) > 0 { if len(m.To) > 0 {
_, _ = h.Write([]byte(m.To[0])) _, _ = h.Write([]byte(m.To))
} }
_, _ = h.Write([]byte(m.Subject)) _, _ = h.Write([]byte(m.Subject))
_, _ = h.Write([]byte(m.Body)) _, _ = h.Write([]byte(m.Body))
@ -94,7 +94,7 @@ func (m *Message) generateAutoMessageID() string {
} }
// NewMessageFrom creates new mail message object with custom From header. // NewMessageFrom creates new mail message object with custom From header.
func NewMessageFrom(to []string, fromDisplayName, fromAddress, subject, body string) *Message { func NewMessageFrom(to, fromDisplayName, fromAddress, subject, body string) *Message {
log.Trace("NewMessageFrom (body):\n%s", body) log.Trace("NewMessageFrom (body):\n%s", body)
return &Message{ return &Message{
@ -109,7 +109,7 @@ func NewMessageFrom(to []string, fromDisplayName, fromAddress, subject, body str
} }
// NewMessage creates new mail message object with default From header. // NewMessage creates new mail message object with default From header.
func NewMessage(to []string, subject, body string) *Message { func NewMessage(to, subject, body string) *Message {
return NewMessageFrom(to, setting.MailService.FromName, setting.MailService.FromEmail, subject, body) return NewMessageFrom(to, setting.MailService.FromName, setting.MailService.FromEmail, subject, body)
} }

6
services/mailer/mailer_test.go
View file

@ -22,17 +22,17 @@ func TestGenerateMessageID(t *testing.T) {
setting.Domain = "localhost" setting.Domain = "localhost"
date := time.Date(2000, 1, 2, 3, 4, 5, 6, time.UTC) date := time.Date(2000, 1, 2, 3, 4, 5, 6, time.UTC)
m := NewMessageFrom(nil, "display-name", "from-address", "subject", "body") m := NewMessageFrom("", "display-name", "from-address", "subject", "body")
m.Date = date m.Date = date
gm := m.ToMessage() gm := m.ToMessage()
assert.Equal(t, "<autogen-946782245000-41e8fc54a8ad3a3f@localhost>", gm.GetHeader("Message-ID")[0]) assert.Equal(t, "<autogen-946782245000-41e8fc54a8ad3a3f@localhost>", gm.GetHeader("Message-ID")[0])
m = NewMessageFrom([]string{"a@b.com"}, "display-name", "from-address", "subject", "body") m = NewMessageFrom("a@b.com", "display-name", "from-address", "subject", "body")
m.Date = date m.Date = date
gm = m.ToMessage() gm = m.ToMessage()
assert.Equal(t, "<autogen-946782245000-cc88ce3cfe9bd04f@localhost>", gm.GetHeader("Message-ID")[0]) assert.Equal(t, "<autogen-946782245000-cc88ce3cfe9bd04f@localhost>", gm.GetHeader("Message-ID")[0])
m = NewMessageFrom([]string{"a@b.com"}, "display-name", "from-address", "subject", "body") m = NewMessageFrom("a@b.com", "display-name", "from-address", "subject", "body")
m.SetHeader("Message-ID", "<msg-d@domain.com>") m.SetHeader("Message-ID", "<msg-d@domain.com>")
gm = m.ToMessage() gm = m.ToMessage()
assert.Equal(t, "<msg-d@domain.com>", gm.GetHeader("Message-ID")[0]) assert.Equal(t, "<msg-d@domain.com>", gm.GetHeader("Message-ID")[0])