RuboCop up to 0.48.1 Cache File /tmp 7pk security

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.

A vulnerability classified as problematic was found in RuboCop up to 0.48.1. This vulnerability affects an unknown part of the file /tmp of the component Cache File Handler. The manipulation with an unknown input leads to a 7pk security vulnerability. The CWE definition for the vulnerability is CWE-254. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

RuboCop 0.48.1 and earlier does not use /tmp in safe way, allowing local users to exploit this to tamper with cache files belonging to other users.

The bug was discovered 05/01/2017. The weakness was published 05/02/2017 (Website). The advisory is available at This vulnerability was named CVE-2017-8418 since 05/02/2017. Local access is required to approach this attack. A single authentication is necessary for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1211 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1 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.




CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

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

NVD Base Score: 3.3
NVD Vector: 🔍



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

NVD Base Score: 🔍


Class: 7pk security
CWE: CWE-254
ATT&CK: T1211

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

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


Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


05/01/2017 🔍
05/02/2017 +1 days 🔍
05/02/2017 +0 days 🔍
05/02/2017 +0 days 🔍
05/02/2017 +0 days 🔍
12/06/2022 +2044 days 🔍


Advisory: 4336
Status: Not defined

CVE: CVE-2017-8418 (🔍)
OSVDB: - CVE-2017-8418 - Rubocop Project - Rubocop - Low


Created: 05/02/2017 10:32 PM
Updated: 12/06/2022 07:00 AM
Changes: 05/02/2017 10:32 PM (56), 09/23/2020 08:35 AM (2), 12/06/2022 07:00 AM (3)
Complete: 🔍


No comments yet. Languages: en.

Please log in to comment.

Might our Artificial Intelligence support you?

Check our Alexa App!