1 files changed, 129 insertions, 0 deletions
diff --git a/tests/integration/xss_test.go b/tests/integration/xss_test.go
new file mode 100644
index 0000000..70038cf
--- /dev/null
+++ b/tests/integration/xss_test.go
@@ -0,0 +1,129 @@
+// 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)
+		require.NoError(t, err)
+		u.User = url.UserPassword("user2", userPassword)
+		require.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`)
+}