Vulnerability Name:

CVE-2021-20327 (CCN-197457)

Assigned:2020-12-17
Published:2021-02-25
Updated:2021-03-04
Summary:A specific version of the Node.js mongodb-client-encryption module does not perform correct validation of the KMS server’s certificate. This vulnerability in combination with a privileged network position active MITM attack could result in interception of traffic between the Node.js driver and the KMS service rendering client-side field level encryption (CSFLE) ineffective. This issue was discovered during internal testing and affects mongodb-client-encryption module version 1.2.0, which was available from 2021-Jan-29 and deprecated in the NPM Registry on 2021-Feb-04. This vulnerability does not impact driver traffic payloads with CSFLE-supported key services from applications residing inside the AWS, GCP, and Azure nework fabrics due to compensating controls in these environments. This issue does not impact driver workloads that don’t use Field Level Encryption.
CVSS v3 Severity:6.8 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
5.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): None
6.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N)
5.3 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:A/AC:M/Au:N/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
5.9 Medium (CCN CVSS v2 Vector: AV:A/AC:H/Au:S/C:C/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): None
Vulnerability Type:CWE-295
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2021-20327

Source: XF
Type: UNKNOWN
nodejs-cve202120327-mitm(197457)

Source: CCN
Type: NODE-3125
Node CSFLE Not Validating KMS Certificate

Source: MISC
Type: Vendor Advisory
https://jira.mongodb.org/browse/NODE-3125

Source: CCN
Type: NPM Web site
mongodb-client-encryption

Source: CCN
Type: NPM Web site
mongodb-client-encryption

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-20327

Vulnerable Configuration:Configuration 1:
  • cpe:/a:mongodb:libmongocrypt:1.2.0:*:*:*:*:node.js:*:*

    • Configuration CCN 1:
  • cpe:/a:nodejs:node.js:*:*:*:*:-:*:*:*

    • * Denotes that component is vulnerable
    BACK
    mongodb libmongocrypt 1.2.0
    nodejs node.js *