Moodle up to 3.1.16/3.4.7/3.5.4/3.6.2 Login as Other User input validation

Summaryinfo

A vulnerability marked as problematic has been reported in Moodle up to 3.1.16/3.4.7/3.5.4/3.6.2. Affected is an unknown function of the component Login as Other User. Performing a manipulation results in input validation. This vulnerability is cataloged as CVE-2019-3847. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Moodle up to 3.1.16/3.4.7/3.5.4/3.6.2 (Learning Management Software). It has been classified as problematic. This affects an unknown code of the component Login as Other User. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. The summary by CVE is:

A vulnerability was found in moodle before versions 3.6.3, 3.5.5, 3.4.8 and 3.1.17. Users with the "login as other users" capability (such as administrators/managers) can access other users' Dashboards, but the JavaScript those other users may have added to their Dashboard was not being escaped when being viewed by the user logging in on their behalf.

The bug was discovered 03/19/2019. The weakness was shared 03/27/2019 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2019-3847 since 01/03/2019. It is possible to initiate the attack remotely. A authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 3.1.17, 3.4.8, 3.5.5 or 3.6.3 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Learning Management Software

Name

• Moodle

Version

• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.1.7
• 3.1.8
• 3.1.9
• 3.1.10
• 3.1.11
• 3.1.12
• 3.1.13
• 3.1.14
• 3.1.15
• 3.1.16
• 3.4.0
• 3.4.1
• 3.4.2
• 3.4.3
• 3.4.4
• 3.4.5
• 3.4.6
• 3.4.7
• 3.5.0
• 3.5.1
• 3.5.2
• 3.5.3
• 3.5.4
• 3.6.0
• 3.6.1
• 3.6.2

License

• open-source

Website

• Product: https://moodle.org/

CPE 2.3info

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CPE 2.2info

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