CVE-2019-18922; Directory Traversal; Allied Telesis AT-GS950

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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.

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I. VULNERABILITY
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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
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The AT-S107 Firmware is used for Configuration through an Web-Interface.

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

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


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

VII. CREDITS
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The Vulnerability has been discovered by the Security-Team at the University Bayreuth.

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