VDB-105637 · CVE-2015-2857 · EDB-ID 37597

Accellion File Transfer Appliance FTA_9_11 get_oauth_customer_name oauth_token command injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Accellion File Transfer Appliance FTA_9_11. It has been rated as critical. This issue affects the function get_oauth_customer_name. This manipulation of the argument oauth_token as part of Shell Metacharacter causes command injection. This vulnerability is tracked as CVE-2015-2857. The attack is possible to be carried out remotely. Moreover, an exploit is present. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Accellion File Transfer Appliance FTA_9_11 (File Transfer Software) and classified as critical. Affected by this vulnerability is the function get_oauth_customer_name. The manipulation of the argument oauth_token as part of a Shell Metacharacter leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Accellion File Transfer Appliance before FTA_9_11_210 allows remote attackers to execute arbitrary code via shell metacharacters in the oauth_token parameter.

The bug was discovered 07/13/2015. The weakness was disclosed 08/22/2017 as EDB-ID 37597 as not defined exploit (Exploit-DB). The advisory is shared at exploit-db.com. This vulnerability is known as CVE-2015-2857 since 04/03/2015. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1202 for this issue.

After immediately, there has been an exploit disclosed. It is possible to download the exploit at exploit-db.com. It is declared as highly functional. The vulnerability scanner Nessus provides a plugin with the ID 85005 (Accellion Secure File Transfer Appliance 'oauth_token' Parameter Remote Command Execution), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11539 (Accellion File Transfer Appliance Multiple Vulnerabilities).

Upgrading to version FTA_9_11_210 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (37597) and Tenable (85005). The entry VDB-107611 is pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

File Transfer Software

Vendor

Accellion

Name

File Transfer Appliance

Version

FTA_9_11

License

commercial

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.2

VulDB Base Score: 7.3
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 85005
Nessus Name: Accellion Secure File Transfer Appliance 'oauth_token' Parameter Remote Command Execution
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 100942
OpenVAS Name: Accellion FTA Remote Command Execution Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Saint ID: accellion_fta_getstatus
Saint Name: Accellion FTA getStatus command injection

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: accellion_fta_getstatus_oauth.rb
MetaSploit Name: Accellion FTA getStatus verify_oauth_token Command Execution
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: File Transfer Appliance FTA_9_11_210

Timelineinfo

04/03/2015 🔍
05/25/2015 +52 days 🔍
07/13/2015 +49 days 🔍
07/27/2015 +14 days 🔍
08/22/2017 +757 days 🔍
08/22/2017 +0 days 🔍
08/22/2017 +0 days 🔍
08/22/2017 +0 days 🔍
08/23/2017 +1 days 🔍
07/18/2024 +2521 days 🔍