CVE-2016-2389 : Détail

CVE-2016-2389

7.5
/
Haute
Directory Traversal
A01-Broken Access Control
16.92%V3
Network
2016-02-16
14h00 +00:00
2018-12-10
16h57 +00:00
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Descriptions du CVE

Directory traversal vulnerability in the GetFileList function in the SAP Manufacturing Integration and Intelligence (xMII) component 15.0 for SAP NetWeaver 7.4 allows remote attackers to read arbitrary files via a .. (dot dot) in the Path parameter to /Catalog, aka SAP Security Note 2230978.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V3.0 7.5 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Network

A vulnerability exploitable with network access means the vulnerable component is bound to the network stack and the attacker's path is through OSI layer 3 (the network layer). Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable one or more network hops away (e.g. across layer 3 boundaries from routers).

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.

None

The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.

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.

None

There is no loss of integrity within the impacted component.

Availability Impact

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

None

There is no impact to availability within the impacted component.

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

EPSS

EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.

Score EPSS

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Percentile EPSS

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

Informations sur l'Exploit

Exploit Database EDB-ID : 39837

Date de publication : 2016-05-16 22h00 +00:00
Auteur : ERPScan
EDB Vérifié : No

Application: SAP xMII Versions Affected: SAP MII 15.0 Vendor URL: http://SAP.com Bugs: Directory traversal Sent: 29.07.2015 Reported: 29.07.2015 Vendor response: 30.07.2015 Date of Public Advisory: 09.02.2016 Reference: SAP Security Note 2230978 Author: Dmitry Chastuhin (ERPScan) Description 1. ADVISORY INFORMATION Title: SAP xMII – directory traversal vulnerability Advisory ID: [ERPSCAN-16-009] Risk: high priority Advisory URL: https://erpscan.com/advisories/erpscan-16-009-sap-xmii-directory-traversal-vulnerability/ Date published: 09.02.2016 Vendors contacted: SAP 2. VULNERABILITY INFORMATION Class: [CWE-36] Impact: SAP xMII directory traversal, read file from server Remotely Exploitable: Yes Locally Exploitable: No CVE: CVE-2016-2389 CVSS Information CVSS Base Score v3: 7.5 / 10 CVSS Base Vector: AV : Access Vector (Related exploit range) Network (N) AC : Access Complexity (Required attack complexity) Low (L) Au : Authentication (Level of authentication needed to exploit) None (N) C : Impact to Confidentiality High (H) I : Impact to Integrity None(N) A : Impact to Availability None (N) 3. VULNERABILITY DESCRIPTION An attacker can use a special request to read files from a server to escalate his or her privileges. 4. VULNERABLE PACKAGES SAP MII 15.0 5. SOLUTIONS AND WORKAROUNDS To correct this vulnerability, install SAP Security Note 2230978 6. AUTHOR Dmitry Chastuhin (ERPScan) 7. TECHNICAL DESCRIPTION An attacker can use xMII function GetFileList to read files from the server. PoC GET /XMII/Catalog?Mode=GetFileList&Path=Classes/../../../../../../../../../../../../etc/passwd 8. REPORT TIMELINE Sent: 29.07.2015 Reported: 29.07.2015 Vendor response: 30.07.2015 Date of Public Advisory: 09.02.2016 9. REFERENCES https://erpscan.com/advisories/erpscan-16-009-sap-xmii-directory-traversal-vulnerability/ 10. ABOUT ERPScan Research The company’s expertise is based on the research subdivision of ERPScan, which is engaged in vulnerability research and analysis of critical enterprise applications. It has achieved multiple acknowledgments from the largest software vendors like SAP, Oracle, Microsoft, IBM, VMware, HP for discovering more than 400 vulnerabilities in their solutions (200 of them just in SAP!). ERPScan researchers are proud to have exposed new types of vulnerabilities (TOP 10 Web Hacking Techniques 2012) and to be nominated for the best server-side vulnerability at BlackHat 2013. ERPScan experts have been invited to speak, present, and train at 60+ prime international security conferences in 25+ countries across the continents. These include BlackHat, RSA, HITB, and private SAP trainings in several Fortune 2000 companies. ERPScan researchers lead the project EAS-SEC, which is focused on enterprise application security research and awareness. They have published 3 exhaustive annual award-winning surveys about SAP security. ERPScan experts have been interviewed by leading media resources and featured in specialized info-sec publications worldwide. These include Reuters, Yahoo, SC Magazine, The Register, CIO, PC World, DarkReading, Heise, and Chinabyte, to name a few. We have highly qualified experts in staff with experience in many different fields of security, from web applications and mobile/embedded to reverse engineering and ICS/SCADA systems, accumulating their experience to conduct the best SAP security research. 11. ABOUT ERPScan ERPScan is the most respected and credible Business Application Security provider. Founded in 2010, the company operates globally and enables large Oil and Gas, Financial and Retail organizations to secure their mission-critical processes. Named as an ‘Emerging Vendor’ in Security by CRN, listed among “TOP 100 SAP Solution providers” and distinguished by 30+ other awards, ERPScan is the leading SAP SE partner in discovering and resolving security vulnerabilities. ERPScan consultants work with SAP SE in Walldorf to assist in improving the security of their latest solutions. ERPScan’s primary mission is to close the gap between technical and business security, and provide solutions to evaluate and secure SAP and Oracle ERP systems and business-critical applications from both, cyber-attacks as well as internal fraud. Usually our clients are large enterprises, Fortune 2000 companies and managed service providers whose requirements are to actively monitor and manage security of vast SAP landscapes on a global scale. We ‘follow the sun’ and function in two hubs, located in the Palo Alto and Amsterdam to provide threat intelligence services, agile support and operate local offices and partner network spanning 20+ countries around the globe.

Products Mentioned

Configuraton 0

Sap>>Netweaver >> Version 7.40

Références

http://seclists.org/fulldisclosure/2016/May/40
Tags : mailing-list, x_refsource_FULLDISC
https://www.exploit-db.com/exploits/39837/
Tags : exploit, x_refsource_EXPLOIT-DB