Vulnerability Name:

CVE-2021-3406 (CCN-197462)

Assigned:2021-02-24
Published:2021-02-24
Updated:2022-10-27
Summary:A flaw was found in keylime 5.8.1 and older. The issue in the Keylime agent and registrar code invalidates the cryptographic chain of trust from the Endorsement Key certificate to agent attestations.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
6.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.5 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-295
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-3406

Source: CCN
Type: Red Hat Bugzilla – Bug 1932469
(CVE-2021-3406) - CVE-2021-3406 keylime: Key cryptographic chain of trust breakage

Source: MISC
Type: Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1932469

Source: XF
Type: UNKNOWN
keylime-cve20213406-weak-security(197462)

Source: CCN
Type: keylime GIT Repository
Key cryptographic chain of trust breakage

Source: MISC
Type: Third Party Advisory
https://github.com/keylime/keylime/security/advisories/GHSA-78f8-6c68-375m

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-b7854ccfe4

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-3406

Vulnerable Configuration:Configuration 1:
  • cpe:/a:keylime:keylime:*:*:*:*:*:*:*:* (Version <= 5.8.1)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:keylime:keylime:5.8.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    keylime keylime *
    fedoraproject fedora 34
    keylime keylime 5.8.1