BigBlueButton up to 2.2.28 Control Character ApiController.groovy escape output
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.2 | $0-$5k | 0.00 |
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.
Product
Name
Version
- 2.2.0
- 2.2.1
- 2.2.2
- 2.2.3
- 2.2.4
- 2.2.5
- 2.2.6
- 2.2.7
- 2.2.8
- 2.2.9
- 2.2.10
- 2.2.11
- 2.2.12
- 2.2.13
- 2.2.14
- 2.2.15
- 2.2.16
- 2.2.17
- 2.2.18
- 2.2.19
- 2.2.20
- 2.2.21
- 2.2.22
- 2.2.23
- 2.2.24
- 2.2.25
- 2.2.26
- 2.2.27
- 2.2.28
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.4VulDB 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: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Escape outputCWE: CWE-116 / CWE-74 / CWE-707
ATT&CK: Unknown
Local: No
Remote: Partially
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: BigBlueButton 2.2.29
Patch: github.com
Timeline
11/19/2020 🔍11/20/2020 🔍
11/20/2020 🔍
12/09/2020 🔍
Sources
Advisory: github.comStatus: Confirmed
CVE: CVE-2020-28954 (🔍)
Entry
Created: 11/20/2020 07:09Updated: 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: 🔍
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