ESET Endpoint Security/Smart Security 5.0/7.0 NIDS Filter EpFwNdis.sys input validation

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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.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in ESET Endpoint Security and Smart Security 5.0/7.0. The impacted element is an unknown function in the library EpFwNdis.sys of the component NIDS Filter. This manipulation causes input validation. This vulnerability appears as CVE-2014-4973. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in ESET Endpoint Security and Smart Security 5.0/7.0. Affected by this vulnerability is an unknown code in the library EpFwNdis.sys of the component NIDS Filter. 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, integrity, and availability.

The weakness was presented 08/20/2014 by Kyriakos Economou as Privilege Escalation in ESET Windows Products as confirmed posting (Bugtraq). The advisory is shared at archives.neohapsis.com. This vulnerability is known as CVE-2014-4973 since 07/15/2014. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The advisory points out:

Versions 5.0 - 7.0 of ESET Smart Security and ESET Endpoint Security products for Windows XP OS allow a low privileged user to execute code as SYSTEM by exploiting a vulnerability in the ESET Personal Firewall NDIS filter (EpFwNdis.sys) kernel mode driver also mentioned as Personal Firewall module Build 1183 (20140214) and prior. This is a 'trusted value vulnerability' that can be triggered through a specific IOCTL with a specifically crafted buffer, to force the driver to validate an improper IOCTL.

The vulnerability was handled as a non-public zero-day exploit for at least 99 days. During that time the estimated underground price was around $0-$5k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (95381) and SecurityFocus (BID 69294†). Additional details are provided at portcullis-security.com. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

ESET

Name

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 7.3

VulDB Base Score: 8.4
VulDB Temp Score: 7.3
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: Partially
Local: Yes
Remote: No

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/13/2014 🔍
07/15/2014 +63 days 🔍
08/15/2014 +31 days 🔍
08/20/2014 +5 days 🔍
08/21/2014 +1 days 🔍
09/23/2014 +33 days 🔍
02/11/2022 +2697 days 🔍

Sourcesinfo

Advisory: Privilege Escalation in ESET Windows Products
Researcher: Kyriakos Economou
Status: Confirmed

CVE: CVE-2014-4973 (🔍)
GCVE (CVE): GCVE-0-2014-4973
GCVE (VulDB): GCVE-100-67393
X-Force: 95381 - ESET Personal Firewall EpFwNdis.sys privilege escalation, High Risk
SecurityFocus: 69294 - Multiple ESET Products CVE-2014-4973 Heap Overflow Vulnerability

Misc.: 🔍

Entryinfo

Created: 08/21/2014 10:42
Updated: 02/11/2022 00:22
Changes: 08/21/2014 10:42 (46), 05/04/2019 14:22 (16), 02/11/2022 00:22 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.