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Allied Telesis AT-GS950/8 Directory Traversal

Allied Telesis AT-GS950/8 Directory Traversal
Posted Nov 30, 2019
Authored by N. H. Sprenger, Dr. H. Benda

Allied Telesis AT-GS950/8 up until firmware AT-S107 version 1.1.3 [1.00.047] suffers from a directory traversal vulnerability.

tags | exploit, file inclusion
advisories | CVE-2019-18922
MD5 | cf0e9fec40c4be23ad75ca90f3bcc953

Allied Telesis AT-GS950/8 Directory Traversal

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Hash: SHA256

=============================================
CVEID: CVE-2019-18922
NAME OF AFFECTED PRODUCT: Allied Telesis AT-GS950/8 until Firmware AT-S107 V.1.1.3 [1.00.047]
PROBLEM TYPE: Directory Traversal
DESCRIPTION: A Directory Traversal in the Web interface of the Allied Telesis AT-GS950/8 until Firmware AT-S107 V.1.1.3 [1.00.047] allows unauthenticated attackers to read arbitrary system files via a GET request.
NOTE: This is an End-of-Life product.

=============================================

I. VULNERABILITY
- -------------------------
The Allied Telesis AT-GS950/8 Network Switch with Firmware until AT-S107 V.1.1.3 [1.00.047]
is confirmed to have an Directory Traversal Vulnerability.

II. BACKGROUND
- -------------------------
The AT-S107 Firmware is used for Configuration through an Web-Interface.

III. DESCRIPTION
- -------------------------
A GET-Request with the Path http://[IP]/../../../../../../etc/passwd shows the File-Content.

V. BUSINESS IMPACT
- -------------------------
A Attacker can read arbitrary System-Files.


VI. SYSTEMS AFFECTED
- -------------------------
Allied Telesis AT-GS950/8 until Firmware AT-S107 V.1.1.3 [1.00.047].

VII. CREDITS
- -------------------------
The Vulnerability has been discovered by the Security-Team at the University Bayreuth. [N. H. Sprenger, Dr. H. Benda].

VIII. LEGAL NOTICES
- -------------------------
The information contained within this advisory is supplied "as-is" with no
warranties or guarantees of fitness of use or otherwise.

=============================================
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