VDB-179777 · CVE-2021-31799 · Nessus 234723

RDoc up to 6.3.0 Filename os command injection

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.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in RDoc up to 6.3.0 and classified as problematic. This issue affects some unknown processing of the component Filename Handler. The manipulation leads to an unknown weakness. This vulnerability is uniquely identified as CVE-2021-31799. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in RDoc up to 6.3.0. This issue affects an unknown part of the component Filename Handler. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 07/30/2021. The advisory is shared at security-tracker.debian.org. The identification of this vulnerability is CVE-2021-31799. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 234723 (Oracle Linux 8 : ruby:3.1 (ELSA-2025-4063)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.3.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (234723). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

RDoc

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CNA Base Score: 7.0
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 234723
Nessus Name: Oracle Linux 8 : ruby:3.1 (ELSA-2025-4063)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: RDoc 6.3.1

Timelineinfo

04/25/2021 🔍
07/30/2021 +96 days 🔍
07/30/2021 +0 days 🔍
04/23/2025 +1363 days 🔍

Sourcesinfo

Advisory: security-tracker.debian.org
Status: Confirmed

CVE: CVE-2021-31799 (🔍)
GCVE (CVE): GCVE-0-2021-31799
GCVE (VulDB): GCVE-100-179777

Entryinfo

Created: 07/30/2021 19:51
Updated: 04/23/2025 08:58
Changes: 07/30/2021 19:51 (35), 08/06/2021 01:26 (2), 10/16/2024 00:12 (44), 04/23/2025 08:58 (2)
Complete: 🔍
Cache ID: 216::103

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