Host Header Injection Flaw in BigBlueButton Greenlight Software by BigBlueButton
CVE-2020-26163

8.8HIGH

Key Information:

Vendor

Bigbluebutton

Status
Greenlight
Vendor
CVE Published:
30 September 2020

What is CVE-2020-26163?

BigBlueButton Greenlight versions prior to 2.5.6 are susceptible to Host Header Injection attacks, which can trigger account takeover scenarios. This vulnerability exploits HTTP headers such as Host and Origin, enabling an attacker to craft a malicious password-reset link. If users follow this link, they may inadvertently compromise their accounts, leading to unauthorized access. It is crucial for users to upgrade to version 2.5.6 or later to mitigate this risk.

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References

https://www.sakshamanand.com/host-header-injection-bigblu...
x_refsource_MISC
https://github.com/bigbluebutton/greenlight/releases/tag/...
x_refsource_MISC
https://github.com/bigbluebutton/greenlight/pull/1543
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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