BigBlueButton up to 2.2.28 Control Character ApiController.groovy escape output

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in BigBlueButton up to 2.2.28. Affected by this issue is some unknown functionality of the file web/controllers/ApiController.groovy of the component Control Character Handler. Such manipulation leads to an unknown weakness. This vulnerability is listed as CVE-2020-28954. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in BigBlueButton up to 2.2.28. Affected by this issue is some unknown functionality of the file web/controllers/ApiController.groovy of the component Control Character Handler. Using CWE to declare the problem leads to CWE-116. The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved. The impact remains unknown.

The weakness was presented 11/20/2020. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2020-28954. There are known technical details, but no exploit is available.

Upgrading to version 2.2.29 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch 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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
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: Escape output
CWE: CWE-116 / CWE-74 / CWE-707
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 2.2.29
Patch: github.com

Timelineinfo

11/19/2020 🔍
11/20/2020 +1 days 🔍
11/20/2020 +0 days 🔍
12/09/2020 +19 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2020-28954 (🔍)
GCVE (CVE): GCVE-0-2020-28954
GCVE (VulDB): GCVE-100-165188

Entryinfo

Created: 11/20/2020 07:09
Updated: 12/09/2020 13:21
Changes: 11/20/2020 07:09 (38), 12/09/2020 13:17 (5), 12/09/2020 13:21 (20)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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