TLS SNI Hostname Validation Flaw in Osquery by Facebook
CVE-2020-1887

9.1CRITICAL

Key Information:

Vendor

Facebook

Status
Osquery
Vendor
CVE Published:
13 March 2020

What is CVE-2020-1887?

A security flaw exists in Osquery, a tool developed by Facebook, where incorrect validation of the Transport Layer Security (TLS) Server Name Indication (SNI) hostname has been identified. This imperfection allows potential attackers to execute Man-in-the-Middle (MITM) attacks, intercepting and tampering with osquery traffic, particularly in environments lacking a properly configured root chain of trust. Users of Osquery versions later than 2.9.0 and earlier than 4.2.0 are urged to be aware of this vulnerability and to configure their systems accordingly.

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Affected Version(s)

Osquery 4.2.0

Osquery next of 2.9.0

Osquery 2.9.0

References

https://github.com/osquery/osquery/pull/6197
x_refsource_CONFIRM
https://www.facebook.com/security/advisories/cve-2020-1887
x_refsource_CONFIRM

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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