Cisco Mail Security Appliance 7.6.3 Active Directory input validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
2.8	$5k-$25k	0.00

Summaryinfo

A vulnerability has been found in Cisco Mail Security Appliance 7.6.3 and classified as problematic. The affected element is an unknown function of the component Active Directory Handler. This manipulation causes input validation. This vulnerability is handled as CVE-2014-2195. There is not any exploit available. The suggested workaround should be applied.

Detailsinfo

A vulnerability has been found in Cisco Mail Security Appliance 7.6.3 and classified as problematic. Affected by this vulnerability is an unknown part of the component Active Directory Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality. The summary by CVE is:

Cisco AsyncOS on Email Security Appliance (ESA) and Content Security Management Appliance (SMA) devices, when Active Directory is enabled, does not properly handle group names, which allows remote attackers to gain role privileges by leveraging group-name similarity, aka Bug ID CSCum86085.

The weakness was released 05/19/2014 with Cisco as CSCum86085 as confirmed security notice (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2014-2195 since 02/25/2014. The exploitation appears to be difficult. The attack can be launched remotely. A single authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available. The advisory points out:

Users are being linked to an incorrect user group when external authentication has multiple groups that start the same.

The advisory illustrates:

Conditions: - Environment is using Active Directory LDAP Queries for External Authentication. - Environment has multiple group mappings to different user roles. - Some of the group mappings start off with the same characters. Examples would be 'ops' and 'opsv2'.

The best possible mitigation is suggested to be Workaround. A possible mitigation has been published immediately after the disclosure of the vulnerability. The security notice contains the following remark:

Configure the AD Group Names so they start differently. Use OpenLDAP or Radius for External Authentication. Use only Local User Authentication.

The vulnerability is also documented in the databases at X-Force (93248), SecurityFocus (BID 67494†) and SecurityTracker (ID 1030258†). Additional details are provided at tools.cisco.com. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Cisco

Name

Mail Security Appliance

Version

7.6.3

License

commercial

Website

Vendor: https://www.cisco.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.1
VulDB Meta Temp Score: 2.8

VulDB Base Score: 3.1
VulDB Temp Score: 2.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Workaround
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

02/25/2014 🔍
05/19/2014 +83 days 🔍
05/19/2014 +0 days 🔍
05/19/2014 +0 days 🔍
05/20/2014 +1 days 🔍
05/20/2014 +0 days 🔍
05/20/2014 +0 days 🔍
04/03/2019 +1779 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCum86085
Organization: Cisco
Status: Confirmed

CVE: CVE-2014-2195 (🔍)
GCVE (CVE): GCVE-0-2014-2195
GCVE (VulDB): GCVE-100-13261
X-Force: 93248 - Cisco Email Security Appliance Microsoft Active Directory security bypass, Medium Risk
SecurityFocus: 67494 - Cisco Email Security Appliance Remote Security Bypass Vulnerability
SecurityTracker: 1030258

Misc.: 🔍

Entryinfo

Created: 05/20/2014 16:29
Updated: 04/03/2019 09:26
Changes: 05/20/2014 16:29 (50), 04/03/2019 09:26 (19)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.