forgejo/tests/integration/xss_test.go
Gusted d3de80b9cc
[SECURITY] Test XSS in dismissed review
It's possible for reviews to not be assiocated with users, when they
were migrated from another forge instance. In the migration code,
there's no sanitization check for author names, so they could contain
HTML tags and thus needs to be properely escaped.

(cherry picked from commit ca798e4cc2)
2024-02-22 15:35:04 +01:00

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// Copyright 2017 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package integration
import (
"context"
"fmt"
"net/http"
"net/url"
"os"
"path/filepath"
"testing"
"time"
issues_model "code.gitea.io/gitea/models/issues"
"code.gitea.io/gitea/models/unittest"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/tests"
gogit "github.com/go-git/go-git/v5"
"github.com/go-git/go-git/v5/plumbing/object"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestXSSUserFullName(t *testing.T) {
defer tests.PrepareTestEnv(t)()
user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
const fullName = `name & <script class="evil">alert('Oh no!');</script>`
session := loginUser(t, user.Name)
req := NewRequestWithValues(t, "POST", "/user/settings", map[string]string{
"_csrf": GetCSRF(t, session, "/user/settings"),
"name": user.Name,
"full_name": fullName,
"email": user.Email,
"language": "en-US",
})
session.MakeRequest(t, req, http.StatusSeeOther)
req = NewRequestf(t, "GET", "/%s", user.Name)
resp := session.MakeRequest(t, req, http.StatusOK)
htmlDoc := NewHTMLParser(t, resp.Body)
assert.EqualValues(t, 0, htmlDoc.doc.Find("script.evil").Length())
assert.EqualValues(t, fullName,
htmlDoc.doc.Find("div.content").Find(".header.text.center").Text(),
)
}
func TestXSSWikiLastCommitInfo(t *testing.T) {
onGiteaRun(t, func(t *testing.T, u *url.URL) {
// Prepare the environment.
dstPath := t.TempDir()
r := fmt.Sprintf("%suser2/repo1.wiki.git", u.String())
u, err := url.Parse(r)
assert.NoError(t, err)
u.User = url.UserPassword("user2", userPassword)
assert.NoError(t, git.CloneWithArgs(context.Background(), git.AllowLFSFiltersArgs(), u.String(), dstPath, git.CloneRepoOptions{}))
// Use go-git here, because using git wouldn't work, it has code to remove
// `<`, `>` and `\n` in user names. Even though this is permitted and
// wouldn't result in a error by a Git server.
gitRepo, err := gogit.PlainOpen(dstPath)
require.NoError(t, err)
w, err := gitRepo.Worktree()
require.NoError(t, err)
filename := filepath.Join(dstPath, "Home.md")
err = os.WriteFile(filename, []byte("Oh, a XSS attack?"), 0o644)
require.NoError(t, err)
_, err = w.Add("Home.md")
require.NoError(t, err)
_, err = w.Commit("Yay XSS", &gogit.CommitOptions{
Author: &object.Signature{
Name: `Gusted<script class="evil">alert('Oh no!');</script>`,
Email: "valid@example.org",
When: time.Date(2024, time.January, 31, 0, 0, 0, 0, time.UTC),
},
})
require.NoError(t, err)
// Push.
_, _, err = git.NewCommand(git.DefaultContext, "push").AddArguments(git.ToTrustedCmdArgs([]string{"origin", "master"})...).RunStdString(&git.RunOpts{Dir: dstPath})
require.NoError(t, err)
// Check on page view.
t.Run("Page view", func(t *testing.T) {
defer tests.PrintCurrentTest(t)()
req := NewRequest(t, http.MethodGet, "/user2/repo1/wiki/Home")
resp := MakeRequest(t, req, http.StatusOK)
htmlDoc := NewHTMLParser(t, resp.Body)
htmlDoc.AssertElement(t, "script.evil", false)
assert.Contains(t, htmlDoc.Find(".ui.sub.header").Text(), `Gusted<script class="evil">alert('Oh no!');</script> edited this page 2024-01-31`)
})
// Check on revisions page.
t.Run("Revision page", func(t *testing.T) {
defer tests.PrintCurrentTest(t)()
req := NewRequest(t, http.MethodGet, "/user2/repo1/wiki/Home?action=_revision")
resp := MakeRequest(t, req, http.StatusOK)
htmlDoc := NewHTMLParser(t, resp.Body)
htmlDoc.AssertElement(t, "script.evil", false)
assert.Contains(t, htmlDoc.Find(".ui.sub.header").Text(), `Gusted<script class="evil">alert('Oh no!');</script> edited this page 2024-01-31`)
})
})
}
func TestXSSReviewDismissed(t *testing.T) {
defer tests.AddFixtures("tests/integration/fixtures/TestXSSReviewDismissed/")()
defer tests.PrepareTestEnv(t)()
review := unittest.AssertExistsAndLoadBean(t, &issues_model.Review{ID: 1000})
req := NewRequest(t, http.MethodGet, fmt.Sprintf("/user2/repo1/pulls/%d", +review.IssueID))
resp := MakeRequest(t, req, http.StatusOK)
htmlDoc := NewHTMLParser(t, resp.Body)
htmlDoc.AssertElement(t, "script.evil", false)
assert.Contains(t, htmlDoc.Find("#issuecomment-1000 .dismissed-message").Text(), `dismissed Otto <script class='evil'>alert('Oh no!')</script>s review`)
}