VDB-101596 · CVE-2016-4901 · BID 93606

e-Tax Installer untrusted search path

CVSS Meta Temp Score
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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.
6.5$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in e-Tax. Affected by this vulnerability is an unknown functionality of the component Installer. Executing a manipulation can lead to untrusted search path. This vulnerability is handled as CVE-2016-4901. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability has been found in e-Tax (unknown version) and classified as problematic. This vulnerability affects an unknown code block of the component Installer. The manipulation with an unknown input leads to a untrusted search path vulnerability. The CWE definition for the vulnerability is CWE-426. The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Untrusted search path vulnerability in The installer of e-Tax Software all versions allows remote attackers to gain privileges via a Trojan horse DLL in an unspecified directory.

The bug was discovered 10/18/2016. The weakness was released 05/22/2017 by Yuji Tounai (Website). The advisory is shared for download at jvn.jp. This vulnerability was named CVE-2016-4901 since 05/17/2016. The attack needs to be approached locally. The requirement for exploitation is a single authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1574.

The vulnerability was handled as a non-public zero-day exploit for at least 216 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 93606†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Untrusted search path
CWE: CWE-426
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/17/2016 🔍
10/18/2016 +154 days 🔍
10/18/2016 +0 days 🔍
05/22/2017 +216 days 🔍
05/22/2017 +0 days 🔍
05/22/2017 +0 days 🔍
10/01/2020 +1228 days 🔍

Sourcesinfo

Advisory: jvn.jp
Researcher: Yuji Tounai
Status: Not defined

CVE: CVE-2016-4901 (🔍)
GCVE (CVE): GCVE-0-2016-4901
GCVE (VulDB): GCVE-100-101596
SecurityFocus: 93606 - National Tax Agency e-Tax CVE-2016-4901 DLL Loading Remote Code Execution Vulnerability
OSVDB: - CVE-2016-4901 - National Tax Agency - E-Tax - Medium

Entryinfo

Created: 05/23/2017 00:22
Updated: 10/01/2020 17:28
Changes: 05/23/2017 00:22 (57), 10/01/2020 17:28 (5)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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