Public Certification Service for Individuals Installer Search Path untrusted search path

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.
6.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Public Certification Service for Individuals. The affected element is an unknown function of the component Installer. Executing a manipulation as part of Search Path can lead to untrusted search path. This vulnerability is handled as CVE-2017-2157. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic was found in Public Certification Service for Individuals (version unknown). This vulnerability affects an unknown function of the component Installer. The manipulation as part of a Search Path 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 installers for The Public Certification Service for Individuals "The JPKI user's software (for Windows 7 and later)" Ver3.1 and earlier, The Public Certification Service for Individuals "The JPKI user's software (for Windows Vista)", The Public Certification Service for Individuals "The JPKI user's software" Ver2.6 and earlier that were available until April 27, 2017 allows remote attackers to gain privileges via a Trojan horse DLL in an unspecified directory.

The bug was discovered 05/09/2017. The weakness was released 05/12/2017 (Website). The advisory is available at jvn.jp. This vulnerability was named CVE-2017-2157 since 12/01/2016. Local access is required to approach this attack. The successful exploitation requires a single authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1574 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 3 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.

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Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.3
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: Partially

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

12/01/2016 🔍
05/09/2017 +159 days 🔍
05/12/2017 +3 days 🔍
05/12/2017 +0 days 🔍
05/13/2017 +1 days 🔍
09/26/2020 +1232 days 🔍

Sourcesinfo

Advisory: jvn.jp
Status: Not defined

CVE: CVE-2017-2157 (🔍)
GCVE (CVE): GCVE-0-2017-2157
GCVE (VulDB): GCVE-100-101206
OSVDB: - CVE-2017-2157 - Jpki - The Public Certification Service For Individuals - Medium

Entryinfo

Created: 05/13/2017 09:12
Updated: 09/26/2020 10:49
Changes: 05/13/2017 09:12 (56), 09/26/2020 10:49 (2)
Complete: 🔍
Cache ID: 216::103

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