Citrix NetScaler 9.3/10.0/10.1 Application Delivery Controller Shell Breakout privileges management

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Citrix NetScaler 9.3/10.0/10.1. Impacted is an unknown function of the component Application Delivery Controller. Such manipulation leads to privileges management (Shell Breakout). This vulnerability is uniquely identified as CVE-2013-6941. Local access is required to approach this attack. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Citrix NetScaler 9.3/10.0/10.1 (Network Management Software). Affected by this issue is an unknown part of the component Application Delivery Controller. The manipulation with an unknown input leads to a privileges management vulnerability (Shell Breakout). Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Unspecified vulnerability in Citrix NetScaler Application Delivery Controller (ADC) 9.3.x before 9.3-64.4, 10.0 before 10.0-77.5, and 10.1 before 10.1-118.7 allows users to "breakout" of the shell via unknown vectors.

The weakness was disclosed 03/05/2014 as CTX139049 as confirmed advisory (Website). The advisory is shared for download at support.citrix.com. This vulnerability is handled as CVE-2013-6941 since 12/04/2013. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 73205 (Citrix NetScaler Application Delivery Controller Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc.. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115182 (Citrix NetScaler Application Delivery Controller Multiple Vulnerabilities).

Upgrading to version 9.3-64.4, 10.0-77.5 or 101-118.7 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (91617), Tenable (73205), SecurityFocus (BID 66014†) and Vulnerability Center (SBV-50393†). The entries VDB-12511, VDB-12513, VDB-12514 and VDB-12515 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Shell Breakout
Class: Privileges management / Shell Breakout
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 73205
Nessus Name: Citrix NetScaler Application Delivery Controller Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: NetScaler 9.3-64.4/10.0-77.5/101-118.7

Timelineinfo

12/04/2013 🔍
03/05/2014 +91 days 🔍
03/05/2014 +0 days 🔍
03/05/2014 +0 days 🔍
03/10/2014 +5 days 🔍
03/11/2014 +1 days 🔍
06/07/2015 +453 days 🔍
06/15/2021 +2200 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: CTX139049
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-6941 (🔍)
GCVE (CVE): GCVE-0-2013-6941
GCVE (VulDB): GCVE-100-12512
X-Force: 91617 - Citrix NetScaler Application Delivery Controller security bypass, Medium Risk
SecurityFocus: 66014 - Citrix NetScaler Application Delivery Controller Unspecified Security Vulnerability
Vulnerability Center: 50393 - Citrix NetScaler ADC 9.3, 10.0, 10.1 Unspecified Remote Security Bypass, High

See also: 🔍

Entryinfo

Created: 03/10/2014 11:42
Updated: 06/15/2021 10:05
Changes: 03/10/2014 11:42 (74), 06/15/2021 10:05 (2)
Complete: 🔍
Committer: olku
Cache ID: 216:5D3:103

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