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Fix possible renderer security problem(#30136) (#30315)

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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
(cherry picked from commit 65d96725bb6cb0d0616c17844aca6c753aa5c851)
This commit is contained in:
Lunny Xiao 2024-04-09 06:24:35 +08:00 committed by Earl Warren
parent e702e79625
commit 8dcc7d9e8c
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GPG key ID: 0579CB2928A78A00
1 changed files with 7 additions and 8 deletions
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15
routers/web/repo/render.go
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@ -12,6 +12,7 @@ import (
"code.gitea.io/gitea/modules/charset"
"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/markup"
"code.gitea.io/gitea/modules/typesniffer"
"code.gitea.io/gitea/modules/util"
@ -44,20 +45,17 @@ func RenderFile(ctx *context.Context) {
isTextFile := st.IsText()
rd := charset.ToUTF8WithFallbackReader(io.MultiReader(bytes.NewReader(buf), dataRc), charset.ConvertOpts{})
ctx.Resp.Header().Add("Content-Security-Policy", "frame-src 'self'; sandbox allow-scripts")
if markupType := markup.Type(blob.Name()); markupType == "" {
if isTextFile {
_, err = io.Copy(ctx.Resp, rd)
if err != nil {
ctx.ServerError("Copy", err)
_, _ = io.Copy(ctx.Resp, rd)
} else {
http.Error(ctx.Resp, "Unsupported file type render", http.StatusInternalServerError)
}
return
}
ctx.Error(http.StatusInternalServerError, "Unsupported file type render")
return
}
ctx.Resp.Header().Add("Content-Security-Policy", "frame-src 'self'; sandbox allow-scripts")
err = markup.Render(&markup.RenderContext{
Ctx: ctx,
RelativePath: ctx.Repo.TreePath,
@ -71,7 +69,8 @@ func RenderFile(ctx *context.Context) {
InStandalonePage: true,
}, rd, ctx.Resp)
if err != nil {
ctx.ServerError("Render", err)
log.Error("Failed to render file %q: %v", ctx.Repo.TreePath, err)
http.Error(ctx.Resp, "Failed to render file", http.StatusInternalServerError)
return
}
}