Skip to content

Keylime's registrar vulnerable to Denial-of-service attack via a single open connection

High severity GitHub Reviewed Published Aug 1, 2023 in keylime/keylime • Updated Sep 4, 2023

Package

pip keylime (pip)

Affected versions

< 7.4.0

Patched versions

7.4.0

Description

Impact

Keylime registrar is prone to a simple denial of service attack in which an adversary opens a connection to the TLS port (by default, port 8891) blocking further, legitimate connections. As long as the connection is open, the registrar is blocked and cannot serve any further clients (agents and tenants), which prevents normal operation. The problem does not affect the verifier.

Patches

Users should upgrade to release 7.4.0

References

@maugustosilva maugustosilva published to keylime/keylime Aug 1, 2023
Published to the GitHub Advisory Database Aug 1, 2023
Reviewed Aug 1, 2023
Last updated Sep 4, 2023

Severity

High
7.5
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CVE ID

CVE-2023-38200

GHSA ID

GHSA-pg75-v6fp-8q59

Source code

Checking history
See something to contribute? Suggest improvements for this vulnerability.