Moodle up to 3.9.10/3.10.7/3.11.3 Backup File Restore 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 (≈)
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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.
8.0$5k-$25k0.00

Summaryinfo

A vulnerability classified as critical has been found in Moodle up to 3.9.10/3.10.7/3.11.3. This affects an unknown part of the component Backup File Restore. This manipulation causes input validation. This vulnerability appears as CVE-2021-3943. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in Moodle up to 3.9.10/3.10.7/3.11.3 (Learning Management Software) and classified as critical. Affected by this vulnerability is some unknown processing of the component Backup File Restore. 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.

The weakness was presented 11/22/2021. It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2021-3943 since 11/10/2021. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/25/2021).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 8.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/10/2021 🔍
11/22/2021 +12 days 🔍
11/22/2021 +0 days 🔍
11/25/2021 +3 days 🔍

Sourcesinfo

Product: moodle.org

Advisory: bugzilla.redhat.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-3943 (🔍)
GCVE (CVE): GCVE-0-2021-3943
GCVE (VulDB): GCVE-100-187123

Entryinfo

Created: 11/22/2021 21:29
Updated: 11/25/2021 19:12
Changes: 11/22/2021 21:29 (37), 11/25/2021 19:04 (1), 11/25/2021 19:12 (18)
Complete: 🔍
Cache ID: 216::103

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