Moodle 2.x/3.x Forum input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Moodle 2.x/3.x. Affected by this vulnerability is an unknown functionality of the component Forum. Such manipulation leads to input validation. This vulnerability is traded as CVE-2017-2576. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Moodle 2.x/3.x (Learning Management Software). Affected by this issue is an unknown code block of the component Forum. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In Moodle 2.x and 3.x, there is incorrect sanitization of attributes in forums.

The bug was discovered 01/17/2017. The weakness was shared 01/20/2017 (Website). The advisory is shared for download at securityfocus.com. This vulnerability is handled as CVE-2017-2576 since 12/01/2016. The attack may be launched remotely. No form of authentication is required for 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 $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 97812 (FreeBSD : moodle -- multiple vulnerabilities (f72d98d1-0b7e-11e7-970f-002590263bf5)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276431 (Fedora Security Update for moodle (FEDORA-2017-6681f94e10)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97812) and SecurityFocus (BID 95649†). The entries VDB-95740, VDB-95741, VDB-95742 and VDB-95745 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
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: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 97812
Nessus Name: FreeBSD : moodle -- multiple vulnerabilities (f72d98d1-0b7e-11e7-970f-002590263bf5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for moodle FEDORA-2017-ae7a707032
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

12/01/2016 🔍
01/17/2017 +47 days 🔍
01/17/2017 +0 days 🔍
01/20/2017 +3 days 🔍
01/20/2017 +0 days 🔍
01/20/2017 +0 days 🔍
03/18/2017 +57 days 🔍
03/20/2017 +2 days 🔍
07/28/2020 +1226 days 🔍

Sourcesinfo

Product: moodle.org

Advisory: securityfocus.com⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-2576 (🔍)
GCVE (CVE): GCVE-0-2017-2576
GCVE (VulDB): GCVE-100-95744
SecurityFocus: 95649 - Moodle CVE-2017-2576 Security Bypass Vulnerability
OSVDB: - CVE-2017-2576 - Moodle - File Modification Issue

See also: 🔍

Entryinfo

Created: 01/20/2017 15:13
Updated: 07/28/2020 14:56
Changes: 01/20/2017 15:13 (73), 07/28/2020 14:56 (8)
Complete: 🔍
Cache ID: 216:9DE:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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