BigBlueButton up to 2.6.0-beta.1 API insertDocument unrestricted upload

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in BigBlueButton up to 2.6.0-beta.1 and classified as problematic. This issue affects the function insertDocument of the component API. The manipulation leads to unrestricted upload. This vulnerability is referenced as CVE-2023-42803. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in BigBlueButton up to 2.6.0-beta.1 and classified as problematic. This issue affects the function insertDocument of the component API. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.2 is vulnerable to unrestricted file upload, where the insertDocument API call does not validate the given file extension before saving the file, and does not remove it in case of validation failures. BigBlueButton 2.6.0-beta.2 contains a patch. There are no known workarounds.

The weakness was published 10/30/2023. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-42803 since 09/14/2023. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

Upgrading to version 2.6.0-beta.2 eliminates this vulnerability.

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

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / 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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: BigBlueButton 2.6.0-beta.2
Patch: github.com

Timelineinfo

09/14/2023 🔍
10/30/2023 +46 days 🔍
10/30/2023 +0 days 🔍
11/24/2023 +25 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-w98f-6x8w-xhjc
Status: Confirmed

CVE: CVE-2023-42803 (🔍)
GCVE (CVE): GCVE-0-2023-42803
GCVE (VulDB): GCVE-100-243995

Entryinfo

Created: 10/30/2023 20:17
Updated: 11/24/2023 08:15
Changes: 10/30/2023 20:17 (48), 11/24/2023 08:10 (2), 11/24/2023 08:15 (12)
Complete: 🔍
Cache ID: 216::103

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

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