Vulnerability Name:

CVE-2021-40693 (CCN-218016)

Assigned:2021-09-08
Published:2022-01-21
Updated:2022-10-03
Summary:An authentication bypass risk was identified in the external database authentication functionality, due to a type juggling vulnerability.
CVSS v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): None
4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-287
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2021-40693

Source: CCN
Type: Red Hat Bugzilla - Bug 2043417
(CVE-2021-40693) - CVE-2021-40693 moodle: authentication bypass risk when using external database

Source: MISC
Type: Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2043417

Source: XF
Type: UNKNOWN
moodle-cve202140693-sec-bypass(218016)

Source: CCN
Type: moodle Web site
MSA-21-0034: Authentication bypass risk when using external database authentication

Vulnerable Configuration:Configuration 1:
  • cpe:/a:moodle:moodle:*:*:*:*:*:*:*:* (Version >= 3.11.0 and < 3.11.3)
  • OR cpe:/a:moodle:moodle:*:*:*:*:*:*:*:* (Version >= 3.10.0 and < 3.10.7)
  • OR cpe:/a:moodle:moodle:*:*:*:*:*:*:*:* (Version < 3.9.10)

  • Configuration CCN 1:
  • cpe:/a:moodle:moodle:3.10:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    moodle moodle *
    moodle moodle *
    moodle moodle *
    moodle moodle 3.10