VDB-120136 · CVE-2018-10874 · RHSA-2018:2166

Red Hat Ansible Inventory Variable input validation

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, which was classified as critical, was found in Red Hat Ansible. Impacted is an unknown function of the component Inventory Variable Handler. Executing a manipulation can lead to input validation. This vulnerability is handled as CVE-2018-10874. It is possible to launch the attack on the local host. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Red Hat Ansible (affected version not known) and classified as critical. This vulnerability affects some unknown functionality of the component Inventory Variable Handler. 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. CVE summarizes:

In ansible it was found that inventory variables are loaded from current working directory when running ad-hoc command which are under attacker's control, allowing to run arbitrary code as a result.

The bug was discovered 06/29/2018. The weakness was released 07/02/2018 (Website). The advisory is shared for download at securitytracker.com. This vulnerability was named CVE-2018-10874 since 05/09/2018. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

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. The vulnerability scanner Nessus provides a plugin with the ID 111030 (RHEL 7 : ansible (RHSA-2018:2166)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 237089 (Red Hat Update for ansible (RHSA-2019:0054)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (111030). Entries connected to this vulnerability are available at VDB-120172 and VDB-121475. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Red Hat

Name

Ansible

License

open-source

Website

Vendor: https://www.redhat.com/

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: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

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: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 111030
Nessus Name: RHEL 7 : ansible (RHSA-2018:2166)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

05/09/2018 🔍
06/29/2018 +51 days 🔍
07/02/2018 +2 days 🔍
07/02/2018 +0 days 🔍
07/03/2018 +1 days 🔍
07/10/2018 +7 days 🔍
07/12/2018 +2 days 🔍
03/29/2023 +1721 days 🔍

Sourcesinfo

Vendor: redhat.com

Advisory: RHSA-2018:2166⛔
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-10874 (🔍)
GCVE (CVE): GCVE-0-2018-10874
GCVE (VulDB): GCVE-100-120136
SecurityTracker: 1041396

See also: 🔍

Entryinfo

Created: 07/03/2018 07:56
Updated: 03/29/2023 14:54
Changes: 07/03/2018 07:56 (68), 02/23/2020 15:48 (5), 08/22/2022 09:37 (4), 03/29/2023 14:53 (3), 03/29/2023 14:54 (1)
Complete: 🔍
Cache ID: 216::103

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