BigBlueButton up to 2.2.6 meetingId/userId/authToken injection

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in BigBlueButton up to 2.2.6. Impacted is an unknown function. Performing a manipulation of the argument meetingId/userId/authToken results in injection. This vulnerability is known as CVE-2020-27602. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in BigBlueButton up to 2.2.6. This affects some unknown processing. The manipulation of the argument meetingId/userId/authToken with an unknown input leads to a injection vulnerability. CWE is classifying the issue as CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

BigBlueButton before 2.2.7 does not have a protection mechanism for separator injection in meetingId, userId, and authToken.

The weakness was published 09/29/2022 as 4bfd924c64da2681f4c037026021f47eb189d717. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2020-27602 since 10/21/2020. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

Upgrading to version 2.2.7 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 4bfd924c64da2681f4c037026021f47eb189d717 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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 2.2.7
Patch: 4bfd924c64da2681f4c037026021f47eb189d717

Timelineinfo

10/21/2020 🔍
09/29/2022 +708 days 🔍
09/29/2022 +0 days 🔍
09/29/2022 +0 days 🔍

Sourcesinfo

Product: github.com

Advisory: 4bfd924c64da2681f4c037026021f47eb189d717
Status: Confirmed

CVE: CVE-2020-27602 (🔍)
GCVE (CVE): GCVE-0-2020-27602
GCVE (VulDB): GCVE-100-209775

Entryinfo

Created: 09/29/2022 09:17
Changes: 09/29/2022 09:17 (43)
Complete: 🔍
Cache ID: 216::103

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