Описание
Gitea: Open Redirect via redirect_to
Details
Despite the validation within urlIsRelative in modules/httplib/url.go, an open redirect is still possible due to usage of directory traversal sequences plus a back-slash in the "redirect_to" parameter.
PoC
When a user uses this URL to login:
https://gitea.com/user/login?redirect_to=/a/../\example.com
They would be redirected to example.com upon a successful login to their gitea account.
Impact
- Phishing: Attackers can use trusted domain links to redirect victims to credential-harvesting pages
- OAuth/SSO Token Theft: In authentication flows, authorization codes or tokens may leak via redirect
- Referer Leakage: Sensitive URL parameters may be exposed to attacker domains via the Referer header
- Cache Poisoning: In deployments with shared caches, malicious redirects may be cached and served to other users
Пакеты
github.com/go-gitea/gitea
<= 1.25.4
1.26.0
Связанные уязвимости
Gitea versions up to and including 1.25.4 allow redirect bypasses through raw or percent-encoded backslashes in redirect_to values.
Gitea versions up to and including 1.25.4 allow redirect bypasses thro ...
Уязвимость системы управления Git-репозиториями Gitea, связанная с переадресацией url на ненадежный сайт, позволяющая нарушителю перенаправить пользователя на произвольный сайт
