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-rw-r--r--CHANGELOG.md2
-rw-r--r--internal/form/repo.go4
2 files changed, 6 insertions, 0 deletions
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 29bf1764..d86906fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,8 @@ All notable changes to Gogs are documented in this file.
### Fixed
- Add `X-Frame-Options` header to prevent Clickjacking. [#6409](https://github.com/gogs/gogs/issues/6409)
+- [Security] Potential SSRF attack by CRLF injection via repository migration. [#6413](https://github.com/gogs/gogs/issues/6413)
+
### Removed
diff --git a/internal/form/repo.go b/internal/form/repo.go
index 26acb2bf..ed963307 100644
--- a/internal/form/repo.go
+++ b/internal/form/repo.go
@@ -72,6 +72,10 @@ func (f MigrateRepo) ParseRemoteAddr(user *db.User) (string, error) {
if len(f.AuthUsername)+len(f.AuthPassword) > 0 {
u.User = url.UserPassword(f.AuthUsername, f.AuthPassword)
}
+ // To prevent CRLF injection in git protocol, see https://github.com/gogs/gogs/issues/6413
+ if u.Scheme == "git" && (strings.Contains(remoteAddr, "%0d") || strings.Contains(remoteAddr, "%0a")) {
+ return "", db.ErrInvalidCloneAddr{IsURLError: true}
+ }
remoteAddr = u.String()
} else if !user.CanImportLocal() {
return "", db.ErrInvalidCloneAddr{IsPermissionDenied: true}