Moodle 3.x Forum information disclosure

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.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Moodle 3.x. The affected element is an unknown function of the component Forum. The manipulation results in information disclosure. This vulnerability is reported as CVE-2018-1135. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Moodle 3.x (Learning Management Software). It has been classified as problematic. Affected is an unknown part of the component Forum. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

An issue was discovered in Moodle 3.x. Students who posted on forums and exported the posts to portfolios can download any stored Moodle file by changing the download URL.

The bug was discovered 05/25/2018. The weakness was disclosed 05/25/2018 (Website). The advisory is shared for download at moodle.org. This vulnerability is traded as CVE-2018-1135 since 12/04/2017. The exploitability is told to be easy. It is possible to launch the attack remotely. A authentication is necessary for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/08/2020). The MITRE ATT&CK project declares the attack technique as T1592.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 13441 (Moodle Multiple Security Vulnerabilities (MSA-18-0007,MSA-18-0008,MSA-18-0009,MSA-18-0010,MSA-18-0012)).

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 104307†). The entries VDB-118210, VDB-118211, VDB-118213 and VDB-118214 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Learning Management Software

Name

• Moodle

Version

• 3.x

License

• open-source

Website

• Product: https://moodle.org/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD 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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

OpenVAS ID: 58549
OpenVAS Name: Moodle 3.x Multiple Vulnerabilities - May18 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Timelineinfo

12/04/2017 🔍
05/25/2018 +171 days 🔍
05/25/2018 +0 days 🔍
05/25/2018 +0 days 🔍
05/25/2018 +0 days 🔍
05/25/2018 +0 days 🔍
02/08/2020 +624 days 🔍

Sourcesinfo

Product: moodle.org

Advisory: moodle.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-1135 (🔍)
GCVE (CVE): GCVE-0-2018-1135
GCVE (VulDB): GCVE-100-118212
SecurityFocus: 104307 - Moodle Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 05/25/2018 23:56
Updated: 02/08/2020 19:46
Changes: 05/25/2018 23:56 (65), 02/08/2020 19:46 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

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