CVE-2023-38201 Keylime: challenge-response protocol bypass during agent registration

2023-08-2516:15:39

CWE-639

redhat

www.cve.org

keylime

registrar

bypass

challenge-response protocol

agent registration

attacker

impersonate

monitored machine

integrity

database

6.5 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

6.6 Medium

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

19.1%

JSON

A flaw was found in the Keylime registrar that could allow a bypass of the challenge-response protocol during agent registration. This issue may allow an attacker to impersonate an agent and hide the true status of a monitored machine if the fake agent is added to the verifier list by a legitimate user, resulting in a breach of the integrity of the registrar database.

CNA Affected

[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "keylime",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:6.5.2-6.el9_2",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:9::appstream"
    ]
  }
]