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Redirect on bad CSRF instead of presenting bad page (#14937)

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The current CSRF handler is a bit harsh with bad CSRF tokens on webpages
I think we can be a little kinder and redirect to base page with a flash error

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2021-07-08 14:57:24 +01:00 • committed by GitHub
parent fc1607b368
commit d06f9ce274
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 31 additions and 5 deletions
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11
integrations/repo_branch_test.go
View file

@ -11,6 +11,7 @@ import (
"strings"
"testing"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/test"
"github.com/stretchr/testify/assert"
@ -134,5 +135,13 @@ func TestCreateBranchInvalidCSRF(t *testing.T) {
"_csrf": "fake_csrf",
"new_branch_name": "test",
})
session.MakeRequest(t, req, http.StatusBadRequest)
resp := session.MakeRequest(t, req, http.StatusFound)
loc := resp.Header().Get("Location")
assert.Equal(t, setting.AppSubURL+"/", loc)
resp = session.MakeRequest(t, NewRequest(t, "GET", loc), http.StatusOK)
htmlDoc := NewHTMLParser(t, resp.Body)
assert.Equal(t,
"Bad Request: Invalid CSRF token",
strings.TrimSpace(htmlDoc.doc.Find(".ui.message").Text()),
)
}

23
modules/context/csrf.go
View file

@ -22,6 +22,7 @@ import (
"net/http"
"time"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/web/middleware"
"github.com/unknwon/com"
@ -266,7 +267,12 @@ func Validate(ctx *Context, x CSRF) {
-1,
x.GetCookiePath(),
x.GetCookieDomain()) // FIXME: Do we need to set the Secure, httpOnly and SameSite values too?
x.Error(ctx.Resp)
if middleware.IsAPIPath(ctx.Req) {
x.Error(ctx.Resp)
return
}
ctx.Flash.Error(ctx.Tr("error.invalid_csrf"))
ctx.Redirect(setting.AppSubURL + "/")
}
return
}
@ -277,10 +283,19 @@ func Validate(ctx *Context, x CSRF) {
-1,
x.GetCookiePath(),
x.GetCookieDomain()) // FIXME: Do we need to set the Secure, httpOnly and SameSite values too?
x.Error(ctx.Resp)
if middleware.IsAPIPath(ctx.Req) {
x.Error(ctx.Resp)
return
}
ctx.Flash.Error(ctx.Tr("error.invalid_csrf"))
ctx.Redirect(setting.AppSubURL + "/")
}
return
}
http.Error(ctx.Resp, "Bad Request: no CSRF token present", http.StatusBadRequest)
if middleware.IsAPIPath(ctx.Req) {
http.Error(ctx.Resp, "Bad Request: no CSRF token present", http.StatusBadRequest)
return
}
ctx.Flash.Error(ctx.Tr("error.missing_csrf"))
ctx.Redirect(setting.AppSubURL + "/")
}

2
options/locale/locale_en-US.ini
View file

@ -100,6 +100,8 @@ never = Never
[error]
occurred = An error has occurred
report_message = If you are sure this is a Gitea bug, please search for issue on <a href="https://github.com/go-gitea/gitea/issues">GitHub</a> and open new issue if necessary.
missing_csrf = Bad Request: no CSRF token present
invalid_csrf = Bad Request: Invalid CSRF token
[startpage]
app_desc = A painless, self-hosted Git service