CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
69.7%
The Accellion Kiteworks appliance prior to version kw2016.03.00 contains multiple vulnerabilities.
CWE-276: Incorrect Default Permissions - CVE-2016-5662
The /opt/bin/cli
script has setuid
permissions by default, allowing an authenticated KiteWorks users to escalate privileges of commands to root. In practice, the user would likely already have administrator or root privileges.
CWE-79: Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’) - CVE-2016-5663
An unauthenticated remote user may be able to conduct reflected cross-site scripting attacks using the code
, error
, and error_description
parameters of oauth_callback.php
.
CWE-22: Improper Limitation of a Pathname to a Restricted Directory (‘Path Traversal’) - CVE-2016-5664
An unauthenticated remote attacker may be able to view limited sets of files outside of the webroot directory by a crafted HTTP request.
CWE-16: Configuration
According to the reporter, Accellion KiteWorks is pre-configured with insecure defaults that may allow a remote user to create an SSH tunnel for a local user and bypass typical authentication channels. The KiteWorks appliance also is configured to allow local user access without further authentication to the Apache Solr and Memcache instances.
The CVSS score below is based on CVE-2016-5664.
An unauthenticated user may be able to conduct cross-site scripting attacks or read limited files from the appliance. An authenticated user may be able to elevate privileges of commands to root.
Apply an update
Accellion has addressed these issues in KiteWorks version kw2016.03.00. Affected users are encouraged to update their software as soon as possible.
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Updated: August 16, 2016
Affected
We have not received a statement from the vendor.
We are not aware of further vendor information regarding this vulnerability.
Group | Score | Vector |
---|---|---|
Base | 9 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
Temporal | 7 | E:POC/RL:OF/RC:C |
Environmental | 5.3 | CDP:ND/TD:M/CR:ND/IR:ND/AR:ND |
<http://www.accellion.com/solutions>
Thanks to Shubham Shah for reporting this vulnerability.
This document was written by Garret Wassermann.
CVE IDs: | CVE-2016-5662, CVE-2016-5663, CVE-2016-5664 |
---|---|
Date Public: | 2016-08-23 Date First Published: |
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
69.7%