CVE-2020-27604
Quick assessment
Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
BigBlueButton是BigBlueButton社区的一套开源的Web会议系统。 Greenlight BigBlueButton 2.3之前版本存在安全漏洞，该漏洞源于没有实现LibreOffice沙箱。这可能使远程认证用户更容易读取bigbluebutton中的API共享秘密。属性文件。使用API共享秘密，攻击者可利用该漏洞可以(例如)使用API join来加入任意会议，而不管其来宾策略设置如何。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1552.005 · Cloud Instance Metadata API
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I. Basic Information for CVE-2020-27604
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
BigBlueButton before 2.3 does not implement LibreOffice sandboxing. This might make it easier for remote authenticated users to read the API shared secret in the bigbluebutton.properties file. With the API shared secret, an attacker can (for example) use api/join to join an arbitrary meeting regardless of its guestPolicy setting.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
BigBlueButton 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
BigBlueButton是BigBlueButton社区的一套开源的Web会议系统。 Greenlight BigBlueButton 2.3之前版本存在安全漏洞，该漏洞源于没有实现LibreOffice沙箱。这可能使远程认证用户更容易读取bigbluebutton中的API共享秘密。属性文件。使用API共享秘密，攻击者可利用该漏洞可以(例如)使用API join来加入任意会议，而不管其来宾策略设置如何。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
|
II. Public POCs for CVE-2020-27604
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2020-27604 (2)
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https://docs.bigbluebutton.org/dev/api.html x_refsource_MISC
Same Patch Batch · n/a · 2020-10-21 · 23 CVEs total
| CVE-2020-7750 | 9.6 CRITICAL | Cross-site Scripting (XSS) |
| CVE-2020-27611 | BigBlueButton 加密问题漏洞 | |
| CVE-2020-17381 | Ghisler Total Commander 安全漏洞 | |
| CVE-2020-26895 | Lightning Network Daemon 安全漏洞 | |
| CVE-2020-26896 | Lightning Network Daemon 安全漏洞 | |
| CVE-2020-25820 | BigBlueButton 代码问题漏洞 | |
| CVE-2020-27602 | BigBlueButton 注入漏洞 | |
| CVE-2020-27606 | BigBlueButton 安全漏洞 | |
| CVE-2020-27608 | BigBlueButton 跨站脚本漏洞 | |
| CVE-2020-27610 | BigBlueButton 信息泄露漏洞 | |
| CVE-2020-27612 | BigBlueButton 信息泄露漏洞 | |
| CVE-2020-27613 | BigBlueButton 安全漏洞 | |
| CVE-2020-17355 | Arista Networks Arista EOS 安全漏洞 | |
| CVE-2020-27609 | BigBlueButton 安全漏洞 | |
| CVE-2020-27607 | BigBlueButton 安全漏洞 | |
| CVE-2020-27605 | BigBlueButton 安全漏洞 | |
| CVE-2020-27603 | BigBlueButton 安全漏洞 | |
| CVE-2020-27601 | BigBlueButton 安全漏洞 | |
| CVE-2018-11764 | Apache Hadoop 访问控制错误漏洞 | |
| CVE-2020-27344 | WordPress cm-download-manager 跨站脚本漏洞 |
Showing top 20 of 23 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2020-27604
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