CVE-2015-2856

published 2017-10-10

CVE-2015-2856: Directory traversal vulnerability in the template function in function.inc in Accellion File Transfer Appliance devices before FTA_9_11_210 allows remote…

Priority P2 68 high 7.5 CVSS 3.0

AV N AC L PR N UI N S U C H I N A N

EXPLOIT

Directory traversal vulnerability in the template function in function.inc in Accellion File Transfer Appliance devices before FTA_9_11_210 allows remote attackers to read arbitrary files via a .. (dot dot) in the statecode cookie.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
accellion	file_transfer_appliance	<= fta_9_11_200	—

Detection & IOCs extracted from sources · hover to see the quote

cookie statecode=../../<path>%00↗

path function.inc↗

• → Monitor HTTP requests for the 'statecode' cookie containing directory traversal sequences (e.g., '../' or '..') targeting Accellion FTA devices. ↗
• → Detect NULL byte (%00) appended to the statecode cookie value, used to truncate the file path and bypass extension restrictions. ↗
• → Alert on access to sensitive files such as system configuration files via the statecode cookie on Accellion FTA appliances, as the web user has read access to these. ↗

• · Vulnerability confirmed on FTA_9_11_200 and potentially earlier versions; patched in FTA_9_11_210. Ensure version fingerprinting is part of detection scope. ↗

CVSS provenance

nvd v3.0 7.5 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd v2.0 5.0 MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N

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